UnityVSA

While a user enables "Antivirus service" on the NAS server, an error is received due to wrong configuration file uploaded. (User Correctable)

The replication session was unable to be resumed after code upgrade to 5.5. (User Correctable)

Repetitive alert seen in Unisphere when Periodic Online Drive Firmware Update (pODFU) is enabled. (User Correctable)

CIFS sessions fail with STATUS_USER_SESSION_DELETED. This is caused by an issue in code 4.0 and 4.1 that generates session IDs above 64,000. (Dell Correctable)

Linux user may not be able to access some files or folders in Network File System (NFS) export after upgrading to Unity OE 5.5.

This article explains an error that may occur when applying an older language pack after upgrading to UnityOS 5.5.1.

Alert 14:38005a is generated when using SupportAssist. The SupportAssist metadata partition has less than 20% of its drive space left. Your SupportAssist function may be affected.

Dell UnityVSA and Dell Unity XT remediation is available for multiple security vulnerabilities that could be exploited by malicious users to compromise the affected system.

This KB article is a list of technical documents and videos produced by Dell Technologies.

Dell UnityVSA and Dell Unity XT remediation is available for multiple security vulnerabilities that could be exploited by malicious users to compromise the affected system.

UnityOS Image upload may fail due to network instability during the transfer process. This document describes the symptoms, a possible cause, and resolution steps.

This KB article details 2020 Lightweight Directory Access Protocol (LDAP) channel binding and an LDAP signing requirement for Windows CVE-2017-8563.

Newly added users are unable to access share in a multiprotocol file system.

This KB explains how to handle situations where the hostname or friendly name of Unity is not updated on the syslog server.

Creating an SMB share -called "home"- for an FS fails. By default, Unity has an enabled feature called "Home Directory Feature." A special share name, HOME, is reserved for the home directory. (User Correctable)

Failed to add NTP server on Unity, Error: Cannot create NTP servers. At least one of the specified NTP servers is not working.

How to configure NIS/Netgroup Local file/Netgroup for NFS export on Unity

CAVA server went offline and recovered intermittently: "The virus checker server xx.xx.xx.xx has encountered an error and is no longer operational.(Error: ERROR_AUTH 64)" :: Category=User Component=DART_VC "Virus checker server xx.xx.xx.xx is online." :: Category=User Component=DART_VC.

Storage administrator cannot log in to Unity management interface using SSH with public key file.

If users enables continuous availability on a CIFS file share, they may experience reduced performance as compared to general-purpose file shares with CIFS clients that support SMB3.0 or the higher dialects.

This article discusses whether CVE-2023-45802 affects Unity.

If two (2) Dell Unity arrays are connected together using the SAS port on the Disk Processor Enclosure (DPE), Data Unavailable and Data Loss can occur.

After upgrading code 5.2.1.0.5.013 or higher, Unisphere reports warning message regarding the spare drive policy.

Nessus Full Safe Vulnerability Security Scan recommends disabling specific SSL/TLS CBC ciphers on Unity. Currently, these ciphers cannot be disabled on Unity.

Dell's response to reported vulnerabilities in the hardware encryption of certain self-encrypting solid-state drives as described in Vulnerability Note VU# 395981. For information on the affected Dell Client models affected, please refer to this guide.

Broadcom has announced the deprecation of vVols in VCF/VVF 9.0, with removal planned for 9.1. Customers using vVols with Dell Unity should avoid upgrading to VCF/VVF 9.0, as support will be limited to critical fixes only. Customers can migrate from vVols to Virtual Machine File System (VMFS) using Storage vMotion or XCOPY (starting in VCF 9.0).

During a Non-Disruptive Upgrade (NDU) to PowerStoreOS v3.0.0, the PowerStore Manager user interface (UI) may become inaccessible. The UI fails to load after the second node reboots as part of the update process.

On a Unity NAS server, NFSv4 locks may be held on files for more than five minutes following an unexpected client shutdown, or a network partition. (User Correctable)

This article explains Unity Link Aggregation and how to configure it. (User Correctable)

This article provides links to several Dell Community pages.

Information about customer replaceable unit (CRU) videos for Dell Technologies Connectrix products

Answers to common Dell Unity Non-Disruptive Upgrade (NDU) related questions

Information about customer replaceable unit (CRU) videos for Dell Technologies Unity products

How to deal with an event in which Replication transfers stopped.

This article describes the causes and solutions when Option [3] in the menu about Certificate is not displayed in the uemcli command. (User Correctable)

Unity OE upgrade fails with error code: 0x6000cb9 if there are ".bin" files in /cores/service (User Correctable)

This article shows how to check the live/active sessions for a SMB NAS Server using CLI

Is it possible to disable SMB shares from a NAS Server so that users cannot access the shares temporarily? (User Correctable)

An array may go into Service Mode (Data Unavailable) due to log bloating (Dell Correctable)

Random stop responding conditions and performance issues while trying to access the exports on the destination side of replication. (User Correctable)

Dell EMC Unity: Performing VDM Migration tasks (File Import) with VNX dual Control Station environments can fail with Error Code:0x90001b6 or 0x900010b. (User Correctable)

This kb will explain the error: 'System unable to detect an Ethernet port or link aggregation on which the NAS server network interface was configured' and its resolution.

Failed: Source in use by another replication process (Error Code: 0x9ef4) Failed: The specified LUN name has already been reserved or LUN with this name already exists. (Error Code: 0x6701140) (Dell Correctable)

Dell Unity: The NTP servers cannot be used because they are not synchronized. Please synchronize your NTP servers and try again. (Error Code:0x6000841) (User Correctable)

How to check Drive End Of Life (EOL) on Dell Unity arrays.

Trying to boot from San using Powerpath and a Dell EMC Unity array in and AIX Enviroment

This KB will explain the issue of LDAP Users/Groups not being visible in Unisphere and the resolution.

Uploading files to Dell EMC Unity via UEMCLI fail for a lack of space on the Unity partitions, however there is adequate free space on the Unity system.

One or more NAS servers may not be in a healthy state. You can continue with the upgrade, but it is recommended that you record the error code and contact your service provider. [Warning Code: dm::check_nas_servers_health_3]

This article explains the symptoms and resolution of several drives appearing as faulted in a newly installed array (this could also happen if there is cross cabling after Unity has been installed)

A blank upload error appears in the Unisphere dialog with no specific error message or error code.

Unable to configure LDAP and LDAPS -- connection verification fails.

Customer does not wish to use domain administrator credentials to join NAS Server to AD due to security reasons. Customer would like to know what are the specific domain user permissions the NAS Server uses to Join to the Active directory.

Unable to restore a replicated LUN from a snapshot created prior to LUN expansion. Error: 0x716f100a

Asynchronous replication session was created, yet no data is being transferred.

Unable to access Unity management interface using https://FQDN or https://ip.address Access to Unity takes place using https://FQDN/?casHome=LOCAL and https://ip.address/?casHome=LOCAL

Can ping across iSCSI IP addresses but cannot get the iSCSI initiators to work. iSCSI vs Replication interfaces.

This article answers some frequently asked questions about how the disk firmware is upgraded.

Customer found that data in source LUN was out-of-date, while checking all its snapshots, the data was as old as the source LUN.

This article explains how Unity connects to the LDAP/LDAPS server, how to check each step state. It also provides a guidance of troubleshooting connection problems.

Determining whether Unity is impacted by CVE-2023-41080, vulnerability in Apache Tomcat's FORM authenticator for URL redirection to untrusted sites ('Open Redirect').

This article will address whether Unity is affected by CVE-2023-24998

When performing a Pre-Upgrade Health Check (PUHC) on Unity OE 5.1 or later code, it may report an error: dm::check_if_user_root_fs_has_enough_space_1

Post file systems going to offline status and recovered, Synchronous replication sessions reported unrecoverable error: "This replication session has encountered an error. Try pausing, and then resuming the replication session. If the problem persists, delete, and then create the replication session again."

This article explains one method to move a NAS server from a storage pool without data reduction to a storage pool with data reduction in a Dell Unity array, ensuring the migration can be done successfully while enabling data reduction benefits.

ESXi Host Report run through the Dell Technologies Central website "https://psapps.emc.com/central/my-work" is missing HBA information.

What is the Unity Performance Metrics Aging Policy and the length of retention for Unity Performance Archive (UPA) files?

Dell EMC Unity: Array System Limitations (User Correctable).

Locked file on Unity SMB share that can not be cleared or deleted

This KB article explains the error "Failed to add user or group because the name was not found in LDAP database (Error Code: 0x600130)" and its resolution

CIFS Users get the error "Network BIOS session limit exceeded" when trying to access CIFS share.

Unisphere GUI fails often and take a long time to respond.

Dell Storage Simple Support Matrices on E-Lab Navigator provide the optimal interoperability for your storage solution.

A Storage Processor fails to start after re-imaging to VNX Block version 05.33.009.5.236 because of a code deficiency in the Operating Environment for that release.

ViPR Dell EMC Storage Resource Management Suite (SRM) shows a blank file‑quota report; quotas are configured, yet the XML API fails with a Java heap space error due to insufficient heap memory on the ControlStation.

Software reports a “Media is write protected” error on a Digital Linear Tape (DLT) 1 with DLT4000 tape; the DLT1 can only read, not write; causing a write failure seen as protection.

This article explains how to work around the PCI components mismatch error during failover.

The Pre-Upgrade Health Check (PUHC) script fails. The tar reports 'This does not look like a tar archive' and header errors, caused by the browser incorrectly decompressing the tar.gz file.

This article explains how to create a snapshot schedule with more than two rules using CLI which cannot be done using UI (User Correctable)

Dell Unity: Alert received: "A new drive firmware file (version XXXX) is now available on the storage system and ready for upgrade."

Dell Unity systems may generate a weekly error alert ‘14:190001’ if an automatically downloaded OE image is available but has not yet been installed.

This article explains two methods of upgrading the Unity OE: Unisphere UI and Command Line (uemcli)

To troubleshoot a failed block import session in Unisphere, use the UEMCLI to view detailed information about the failed session. Unisphere (UI) may not provide enough information to resolve the issue.

In Unity OE 5.3.1, the SupportAssist service is designed to attempt automatic recovery when issues arise. However, due to known issues in this version, the service may fail to recover on its own, ultimately requiring manual intervention to restore functionality.

After performing a code upgrade on a Unity VSA or Physical box, the management DNS is removed.

Link aggregation can only be used for NAS server, file replication, and file import interfaces. You cannot aggregate Ethernet ports that have iSCSI configured.

Information about customer replaceable unit (CRU) videos for Dell Technologies VxFlex Ready node products

Information about customer replaceable unit (CRU) videos for Dell Technologies Powerflex products

How to remove the Not attached host access from the snapshots (User correctable)

This article discusses the best practices to follow to ensure that Consistency Groups (CG) with replication configured are handled appropriately. (Dell Correctable)

This article describes considerations for when manual replication synchronization is in progress and replication has a need to be paused.

Learn how the MyService360 services analytics dashboard integrates the Dell AIOps (formerly CloudIQ) Health Score into the Install Base views. This integration streamlines services and product health management by IT admins using the MyService360 and Dell AIOps portals. Verify supported products by portal and access helpful Dell AIOps resources.

All thin file systems, regardless of size, have 1.5 GB reserved for metadata upon creation.

CSV file exports containing Chinese, Japanese, or Korean characters may not display correctly when opened directly in Microsoft Excel due to an Excel character rendering limitation.

If the command syntax is not correct, the quota tree creation operation may fail with error code 0x100b1b2.

This article describes how to create quota trees through the Unisphere Command-Line Interface (UEMCLI) or the Unity UI.

A Unity Storage Processor (SP) faults and goes into Service Mode with error code 0xb01, 6913, or 1:1678040.

This article describes how to gather the necessary log for Dell Support to troubleshoot MetroSync Manager issues.

How to gather SPCollects from any VNX1 or VNX2 Series array, running OE Release 32 and above, using either Unisphere Client, USM or Navisphere Secure CLI.

Critical alert: An I/O module in the Disk Processor Enclosure has faulted and must be replaced.

Agentless import of multiple VNX volumes to PowerStore fail and may result in DataPath Panics.

Here is how to properly update the DELL EMC install base that a Unity system is installed at. This is a requirement for proper ESRS deployment for a Unity Array and will assist with properly shipping replacement parts to the correct address.

User or customer is unable to configure Integrated SRS or SCG (Previously Centralized Secure Remote Services) due to Error Code:0x6400b82

Customer has VASA enabled/configured, but unable to expand LUN from VSphere. We were able to expand the LUN from within Unisphere.

How to check if System VDM (SVDM) is running on SPA or SPB (User Correctable)

This article provides instructions on how to create an operating environment (OE) upgrade service request using Dell online support website.

This Knowledge Base acticle details the guidelines for Configuring EMC VNX Systems with SAN Volume Controller and ( SVC ) Storwize V7000 and V5000

The following Logical units are not accessible

Unisphere reports an alert that "pool space utilization has reached 95% on your Dell Unity storage system". Pools exceeding the 90% threshold can cause degraded performance or inability to allocate new storage.

This article explains why a Storage Processor (SP) Panics when a pool reaches 100% consumed and provides remediation options.

When a storage pool's usage exceeds its high water mark, the automatic snapshot deletion (auto delete) feature pauses. Although it tries to delete snapshots to free up space, it may not be enough to bring the pool's usage below the threshold. As a result, the auto delete function remains paused, displaying an error message, until you manually restart it. Once reenabled, the auto delete feature resumes attempting to delete snapshots and reduce pool consumption.

Broadcom features are designed for standard virtual machines (VM), requiring special consideration when used with Dell UnityVSA arrays.

Dell EMC Unity, Dell EMC UnityVSA and Dell EMC Unity XT remediation is available for the Apache Log4j Remote Code Execution Vulnerability that may be exploited by malicious users to compromise the affected system. Dell recommends implementing this remediation as soon as possible in light of the critical severity of the vulnerability.

Dell Unity does not support the inserted Small Form-factor Pluggable (SFP).

The following Small Form-factors Pluggable (SFPs) are supported on Dell Unity arrays.

Persistent Reservation Conflicts can cause Broadcom (VMware) ESXi servers to lose access to some Logical Unit Numbers (LUN).

Quota trees may not be nested within a single directory.

Best practice setting to modify a module parameter for lsi-msgpt3 SAS driver when using SAS Front End connectivity.

This article explains how to delete all quota trees on a file system or a specified quota tree.

This article explants how to change support configuration attributes for proxy servers.

SFTP disconnection seen post Unity Code Upgrade to OE 5.0.7 version

Dell Unity supports NFS NFSv3 through NFSv4.1.

On Dell Unity arrays, there are options to automatically expand or shrink Thin File Systems (FS). This is done to consistently maintain optimized space utilization.

BranchCache allows local Local Area Network (LAN) access to remote Network-Attached Storage (NAS) server data, bypassing the Wide Area Network (WAN).

The 'folderRenamePolicy ' attribute only applies to multiprotocol file systems.

Packet reflect (-enablePacketReflect) is a feature that ensures outbound (reply) packets are sent back to the same host or router as the inbound (request) packet.

This article goes over the activation procedures of the CAVA on a Dell Unity array.

When a Network File System (NFS) user requests access to exports, the server retrieves their credentials from external naming services or local files to authenticate them. Afterwards, these credentials are stored in an internal credential cache.

A Dell Unity Storage Processor (SP) may unexpectedly reboot due to Memory Map (MMAP) issues.

This article explains how to configure File Transfer Protocol (FTP) and Secure File Transfer Protocol (SFTP) for NAS servers on Dell Unity arrays.

After configuring the Simple Network Management Protocol (SNMP) alerting, it appears that there are no meaningful traps received when sending test traps.

Dell support cannot recover a Unity File System (FS) or a Unity Logical Unit Number (LUN) that a Unity administrator mistakenly deletes.

Unity call home alert 14:60a38 states: "FastCache has disks that are predicted to exceed drive-specified endurance in less than 30 days with different days remaining for End-Of-Life (EOL)."

This article shows the different user roles in Dell Unity arrays and how to view those roles.

Unisphere Online Help aids with configuration, provision, monitoring, and protection of hosts and services.

This article provides access to the Dell Unity Support Matrix and additional specification details through included links.

It has been observed that some Solid-State Drive (SSD) models may have their End-of-Life (EOL) flag set after accumulating a total power-on time of approximately 6.8 years or more. This flag indicates that the drive has reached the end of its expected lifespan and may no longer be supported or guaranteed to function reliably.

This article aims to provide a comprehensive overview of the key differences between FAST VP and FAST Cache.

The FAST Cache has Flash drives of a specific type that are predicted to exceed end-of-life thresholds within 60 days. The storage system does not have enough free drives of the same type to replace them.

The system could not start an automatic copy of data from one or more drives in FAST Cache, even though there are spare drives available.

Dell Unity FAST Cache solid state drives (SSD) are not seen while configuring FAST Cache. (Error Code: 0x67001a7)

FAST Cache has drives that are predicted to exceed their drive specified endurance in less than X days with the same days remaining for End-of-Life (EOL).

Another reason why a warning message is displayed when running Pre Upgrade Health Checks.

This article shows how to find the Dell Unity Serial Number (SN) when looking for CTA Virtual Edition (VE) support, since CTA VE, when implemented with Unity, has no SN to open a case with, instead the Unity SN is used.

Call home alert 14:170050 The license has expired

Unity supports the ability to host multiple tenants on a single system for service providers who would like to isolate group of VLANs from the rest, also tenants helps admins as NAS servers belonging to same tenant will have the tenant's name visible beside each NAS server which eases the NAS servers grouping and classification. NAS servers created with access to the tenant will have access to the VLANs included in the tenant. Dell Unity’s flexible pool-based architecture also enables the ability to separate each tenant onto their own pools for separation at the drive level, if necessary.

This article explains how to configure the file filtering feature on Unity Arrays.

Various statistic counters can be obtained from the "svc_cava -stats" command.

This article explores the impact of asynchronous replication on array performance during space reclamation from large virtual machines (VM).

Dell Unity: You may have provided invalid EMC support credentials. Verify that at 'Settings -> Support Configuration -> EMC Support Credentials' in Unisphere, or using uemcli '/sys/support/account' command. (Error Code:0x6400b82) (User Correctable)

Dell Unity: Unable to retry or resume upgrade (User correctable)

Dell Unity: Deleting an Initiator while attached to LUN with no downtime Error Code:0x6000116

A Dell Unity Software upgrade fails with 'Health Check Error:check_replication_health_2, check_replication_health_5'. The software update could also fail with 'Warning: check_replication_health_4'.

Dell Unity: Error 14:600038" "The maximum number of file-based snapshots allowed will be reached in XX day(s) and XXhour(s). The current percentage is XX of the maximum size."(User Correctable)

A dial home test message is sent via ConnectHome.

When a Unity system initiates a call home to open a service request for a support issue, it sends the customer's contact information along with the alert message. This simplifies the process for Technical Support engineers to contact the appropriate individuals. Up-to-date contact information ensures that Technical Support has the most accurate information for contacting the customer in response to a support issue. Dell Technologies recommends keeping the primary contact's information up to date in Unity Unisphere. This article shows how to do so.

The file system is offline and requires recovery. This may be caused by the pool being offline. Fix the issue on the pool first. If the problem still exists, contact your service provider.

Dell EMC Unity: Message received: The UUID entered already exists. Validate your System UUID or contact our World Wide License Support team below for additional assistance.

Dell Unity: Warning Code: "dm::check_filesystems_health_4 during Pre-Upgrade Health Check"

Dell Unity: Linux LUN format warning-alignment is offset by 512 bytes. This may result in poor performance.

Dell Unity: Error 14:603b8 NAS Server Degraded

The I/O module is powered off. Try rebooting the Storage Processor (SP). If the I/O module remains powered off after a reboot, you may have to replace the I/O module. (Dell Correctable)

Issue: Changing attribute access to a host like read-only, R/W, or root, sends an error of having a duplicate host in the list.

When creating a Proxy NAS Server, if the NAS Server name contains spaces, the addition fails.

After the admin and service passwords are reset using the Non-Maskable Interrupt (NMI) button, and Unisphere is accessed, the user is prompted to change the password. A message window with "Error Code: 0x6400b88" is displayed.

Unity systems will not call home if manually configured to a VE Gateway server.

Error: The system encountered an unexpected error while completing the ESRS action.

Unable to perform update/install due to following current Activites : Active MFT Transfer

Configure-ESRS-behind-Proxy error code 0x6400bbe

This article details the susceptibility of Dell Unity to the vulnerability CVE-2024-42225.

How to enable and configure SupportAssist in Dell Unity arrays

Is Encrypting File System (EFS) supported in Unity?

Some IDs such as Fake, nobody, c4, log, nogroup, admin, service, ECOM etc were found while scanning the Unity Array.

This article details the susceptibility of Dell Unity products to the vulnerabilities detailed in CVE-2022-3437 and CVE-2022-3592.

This article provides a list of security vulnerabilities that cannot be exploited on Dell Unity OE 5.3.x, but may be identified by security scanners.

This article details the susceptibility of Dell Unity products to the vulnerability detailed in CVE-2023-51385 Vulnerability.

This article details the susceptibility of Dell Unity to the vulnerabilities detailed in CVE-2024-6409.

This KB article explains if the Apache Struts 2 is part of Unity. Apache Struts 2 is an open-source web application framework for developing Java EE web applications.

This article details the susceptibility of Dell Unity to the vulnerability detailed in CVE-2022-34301.

LUN unavailable for I/O even though it appears to be online.

After initial copy and incremental copy was successfully run on the emcopy hosts, while trying to run the sharedup utility to copy the security descriptors and all security permissions related from the source to the destination shares, an error occurred in the log file generated from sharedup

This knowledge base article outlines some optional workflows to remove an unwanted initiator from a host in Unisphere.

This Knowledge Base Article is to explain how to use Unisphere to configure LDAP Users or Groups, for authentication on a Dell EMC Unity Array.

Problems accessing the snap of a LUN after is it recently expanded then refreshed. simply Delete & Recreate the problem snapshot.

How to setup Asynchronous file remote replication

KB showing how to view the Dell EMC Unity configuration using telemetry files.

To avoid entering the admin credentials in certain UEMCLI commands that need them, you can store them using the "uemcli -saveUser" command.

In Dell EMC Unity, we cannot change the high watermark threshold value for File System alerts, by design.

A block import session shows Non-recoverable error, after Unity pool is expanded from out of space error.

A CIFS NAS import from VNX2 to Unity cannot start initial copy.

Call home alert 14:6048a SP faulted.

Call Home Alert 14:605a0 Ethernet Port Faulted

Call home alert 14:6059f Ethernet Port Uninitialized

Adding autoregistered ESXi hosts to a General or ESXi host group type fails, resulting in the error: "Failed: One or more hosts does not match the host group type (Error Code: 0x900a810)."

Datastore creation fails to use NVMe Protocol with Emulex HBA on ESXi 7.0.3.

Modifying the physical configuration of a Dell UnityVSA Virtual Machine (VM) using vSphere is not supported, except for adding virtual disks for data storage.

This article covers the steps to manually change the ownership of a NAS Server to the peer Storage Processor (SP).

This article provides a workaround for the issue where Performance Dashboard information cannot be downloaded in Comma-Separated Value (CSV) format when a Language Pack is applied. (User Correctable)

This article provides guidance on balancing Block and File workloads on a Dell Unity storage system.

When a Broadcom (VMware) host is used with a Dell Unity storage system, both Host Logical Unit Number 0 (LUN 0) and Logical Unit Number Zero (LUN Z) may be present. This article explains what LUN Z is, why it appears, and how to remove it.

An error is received when configuring the "Support Credentials" area in Unisphere in order to configure Secure Remote Services: Error "You may have provided invalid EMC support credentials" when preparing to configure Secure Remote Services.

Expanding a pool is the process of adding additional drives to a tier or additional tiers, depending on the system model, to an existing pool within the system to increase its capacity. (Dell Correctable)

Joining Active Directory (AD) fails with error: Miscellaneous failure ASN.1 failed call to system time library. (User Correctable)

The Unity displays a warning that file system is filling up when reaching 75% (User Correctable)

Dell Unity, Dell UnityVSA, and Dell Unity XT remediation is available for multiple security vulnerabilities that may be exploited by malicious users to compromise the affected system.

Dell EMC Unity, Dell EMC UnityVSA and Dell EMC Unity XT remediation is available for multiple security vulnerabilities that may be exploited by malicious users to compromise the affected system.

In a scenario where there is a source LUN replicated to a destination LUN, the destination resource is marked as a destination image. This restriction blocks Read/Write access on the destination storage resource.

Users following the procedure to set a custom banner using the svc_banner command as described in Dell Unity Family Service Commands Technical Notes run into permission errors.

The Unity array dials home with error code 14:600f4 - File system X is offline (Critical Error)

This article covers the correct procedure to shut down and power on a Dell Unity system (virtualized or physical).

Dell EMC Unity SP reboots unexpectedly without dump file created.

Host stale initiator records for unused FC ports on Unity array may be reported as faults on Unisphere

DELL EMC Unity :The object was not found with "Pool0". (Error Code:0x1000401) error while creating Traditional Pool on OE 5.2.0 The object was not found with "Pool0". (Error Code:0x1000401) while creating Traditional Pool.

Unable to connect to UNITY via SSH (SSH enabled on UNITY). In order to proceed with issue analysis connection to Storage Processor via IPMI started. The IPMI connection through the service ports fails with error: Error: Unable to establish IPMI v2 / RMCP+ session

Some svc_cifssupport commands require the password of the domain admin user to be specified and fail when the domain account password contains special characters. This article describes how to specify a password when special characters are included.

A code issue in the Unity OE may cause a memory leak eventually resulting in an SP panic/reboot.

Conflict happens that the initiator is registered on more than one host.

Dell Unity, Dell UnityVSA, and Dell Unity XT remediation is available for multiple security vulnerabilities that may be exploited by malicious users to compromise affected systems.

Dell Unity, Unity VSA and Unity XT remediation is available for multiple security vulnerabilities that may be exploited by malicious users to compromise the affected system.

Dell Unity Family, Dell EMC Unity All Flash remediation is available for multiple security vulnerabilities that could be exploited by malicious users to compromise the affected system.

Dell Unity, Dell Unity VSA and Dell Unity XT remediation is available for multiple security vulnerabilities that may be exploited by malicious users to compromise the affected system.

This article describes a possible solution to the problem when the "svc_udoctor" command does not work properly. (Dell correctable)

Unity Unisphere is unable to connect using Secure Connect Gateway (SCG) (User Correctable).

Storage Customer Notification: pertains to Storage Center OS (SCOS) 6.7, 7.0, and 7.1.1. It contains specific information related to system features and or functionality.

SC Storage Customer Notification: Non-Service affecting upgrades may need a controller reset to apply the firmware update.

Alerts raised for IP configuration and Port Group (PG) on a management VMkernel adapter of an ESXi host which is configured on a node.

Refreshing and Restoring the volume group (volume_group_name) failed.

Attempts to create a new NAS server IP address fails with error: The IP address specified is associated with an existing NAS server interface in the same tenant. Specify a different IP address. (User Correctable)

This tutorial explains how to prepare to update a Dell Compellent storage system or SCOS. The steps below to be followed to ensure that the update process runs smoothly.

This article shows how to gather logs and data for diagnosing performance issues on Unity arrays.

This article describes how to copy customer data back to system drives from the hotspare used in Traditional pools.

This article explains how to address or order a failed drive in a Dell Unity system for SymptomCode: Neo14:60258 (User Correctable)

Information about customer replaceable unit (CRU) videos for Dell Technologies PowerProtect and Data domain products

Dell Unity Error: platform::check_SMTP_server_1

This article explains how BMC and or iDRAC may report network vulnerabilities to scanning software for Storage Center products.

This article displays a list of Dell Software Products and related articles on how to obtain the Software Unique ID (SWUID) for each specific product. The SWUID is required for streamlining the processes related to both the Software License Renewal process and opening a Support Case.

SC Storage Customer Notification: Server Cluster Object OS Definition Changes May Cause Removal of Misaligned Volume Mappings.

Red Hat server boot from SAN (BFS) with DM-MPIO does not boot when Unity LUN is in an inactive state. On Red Hat server (both BFS and Local Boot), "fdisk -l" command (EMCGRAB and SOSREPORT) does not complete when LUN is set to inactive. (User Correctable)

LUN numbers must be consistent across both Storage Center systems when using Live Volume.

Receiving alerts of "Only One Path to Device" for one or more disk indexes when using Cross Platform Replication.

Uemcli command failed with "Unable to validate the specified certificate" after upgrading to 5.5.0, this will also lead to pre-upgrade health check failure and prevent future OS/firmware upgrade.

Unity arrays running 5.3.0.0.5.120 code with SupportAssist enabled may experience an SP panic after being up for approximately 2 months with a two SCG configuration or after approximately 4 months with a single SCG configuration, or direct connect.

Refer to the information about the DSA-2019-065 and CVE-2019-3726, also known as the Dell Update Package (DUP) Framework Uncontrolled Search Path Vulnerability.

This article explains an unexplained SP reboot due to BMC Power Reset Action.

This article gives a general listing of ports that should be opened on a Fire Wall to allow for proper communication with Unity solutions. This includes Secure Remote Services and Cloud IQ functionality.

This Dell Knowledgebase Article provides details when upgrading a system that has an advanced replication topology.

This article helps users safely manage storage by outlining key considerations before deleting snapshots in Dell Unity systems. (User Correctable)

Dell Unity Connect Home: LUN X is unavailable and requires a Storage Integrity Check - Error Code 14:600e9.

Writing to /tmp on Unity system will cause an SP Reboot if /tmp becomes full. For Unity, /tmp is only 56M in size.

Dell Unity: Connect Home: File system X is unavailable and requires a Storage Integrity Check - Error Code 14:600f2

After upgrading to Unity OE version 5.5, NFSv4 clients cannot access data.

Users found that the performance charts are not available in UnityOS 5.1.0 and 5.1.1.

When trying to validate support credentials, refreshing the support contract manually, or the autorefresh is polling an incorrect contract from Dell Backend. (User Correctable)

What RFC formats are available for use with Unity? Is it possible to change the RFC format?(User Correctable)

How to configure passwordless SSH access in Unity. (User Correctable)

NAS Server warning message: None of the LDAP servers configured for LDAP client of the NAS server are reachable. (Dell Correctable)

Some security audit tools may report that a Unity NAS server does not regularly change its computer account password. By default, the Unity NAS server does not change its computer account password regularly. Windows computers change their machine account password every 30 days. (User Correctable)

HP scanners running firmware version 4.11 are unable to connect to an SMB share hosted on the array (User Correctable)

Customers receiving daily alerts that their support contract is about to expire even after renewing the support contract. (Dell Correctable)

The article describes one of the reasons why the mount fails with "No such file or directory" when trying to mount with NFSv4.

Attempting to reboot a single SP (such as during a code upgrade) while also destroying a snapshot leads to multiple SP reboots.

Dell UnityVSA and Dell Unity XT remediation is available for multiple security vulnerabilities that could be exploited by malicious users to compromise the affected system.

Dell can connect UI over Secure Connect Gateway (SCG) but unable to connect CLIViaSSH connection over SCG. (User Correctable)

Dell EMC Unity was configured with SRS Centralized, Dell EMC Support is able to see and access the array, but the array thinks it is not configured.

How to resolve the possible NAS permission issue after SMB Active Directory domain change when multiprotocol is enabled. (User Correctable)

This KB explains how to manage VNX's unisphere using an LDAP user

Receiving "Lost access to Volume: <WWN>" and "Performance Deteriorated" messages in vSphere for several ESXi hosts.

Customer reported their third-party monitoring software is unable to locate the EMC_SUPPORT_ECOSYSTEM License after completing an upgrade (NDU) to Unity operating system 5.3

Support for Integrated Secure Remote Services (SRS) ends on Dec. 30, 2024. Dell Unity arrays connected using the Integrated SRS option will lose connectivity unless the Unity array is upgraded to OE 5.3 or above before Dec. 30, 2024.

Dell Unity PUHC (Pre Upgrade Health Check) failed for ERROR_CODE=platform::check_for_hardware_faults_2

In Unity OS Release: 5.2.0.0.5.173 Users might have issues connecting to CIFS/SMB Shares with Kerberos token greater than 16k.

After an upgrade (NDU) to Unity OS 5.4.0.0.5.094, an alert is generated for "TLSv1.0 and TLSv1.1 are not secure. It is recommended that TLSv1.2 is used. See KB 000022527 for information about how to disable TLSv1.0 and TLSv1.1"

vVol datastores are allowed to be deleted from within Unisphere even when hosts are attached.

Dell has a Customer Replaceable Unit (CRU) program for many of our hardware systems.

Dell EMC Unity: How to address "Delete Status: unsupported" issue for VPlex provisioned Unity volume(User Correctable)

The following are the TCP ports used for Unity Replication.

The Unity license has expired.

Steps to configure SNMP alerts on a Dell Unity array. (User Correctable)

Active Directory (AD) based LDAP is case-insensitive by default, while other implementations may not be

There is a code-related issue which impacts UPA file creation and retention. This also impacts Dell CloudIQ and Unisphere's ability to generate or display performance graphs.

Restoring deleted files/directories from a file system snapshot.

The storage resource cannot be modified or deleted because it is participating in a replication session.

Too many API requests from the CSI driver for the Dell Unity array may cause an SP to panic or MGMT service to remain down.

The Serial Number for the new DPE may change to a temporary serial number after replacing the Unity Disk Processor Enclosure (DPE).

Data Collection errors out with "The service task cannot be performed because a service task of the same type is in progress. Please retry later. (Error Code:0x6400ba2)" Unity Data Collection does not complete. (Dell Correctable)

This article describes Data Reduction considerations and best practices on a Dell Unity array.

The recommended IOPS per drive is different between Dell Unity and VNX arrays. Below are the values for both.

This article shows how to monitor a drive rebuild or proactive copy. (User Correctable)

Intermittent SMB access issue caused by too many open CIFS files

LUN or File System temporarily goes offline but comes back online by itself.

After recent hardware maintenance where Service Processors (SPs) had to be removed, one or both SPs may panic, reboot sporadically or continuously, or come up in Service Mode if cabled incorrectly or components came loose.

Storage Processor A (SPA) and Storage Processor B (SPB) Ethernet ports report an error or warning on a port/Small Form-Factor Pluggable (SFP). The ports are not in use or have no cables plugged in, but they were in use previously.

This panic condition is due to a regression in Unity OE 5.1 related to Secure NFS in a Kerberos environment with a DNS server that is selectively responding or otherwise problematic. It can panic if a name service lookup is being performed and the name service is unreachable, and the lookup name does not exist in cache. This issue does not impact Unity OE 5.0.x releases.

NAS servers cannot connect to Network Time Protocol (NTP) servers using IP addresses assigned to the NAS servers.

This is a known issue where user quotas cannot be enforced within a quota tree. (Dell Correctable)

Unity may assign the same replication interface pair to every session when creating LUN replication sessions. The best way to ensure this does not happen is to manually create the replication sessions using UEMCLI. (User Correctable)

Clients briefly lose connectivity to a NAS server during a service processor (SP) failover or during a replication failover. (User Correctable)

SP panic may occur when using NFSv4 in large configurations.

Filesystem goes offline after attempting IMT commit operation on OE 5.1.0.x, 5.1.1.x, or 5.1.2.x.

DSA-2020-132: Dell EMC Unity Family, Dell EMC Unity VSA Family, Dell EMC Unity XT Family Security Update for Multiple Third Party Components

After upgrading to UnityOS 5.1.x, there is a substantial decline in SMB/NFS performance and overall TCP throughput.

Users from a trusted domain are logged in as guest account or denied access to CIFS servers. (Dell correctable)

A newly purchased Dell UnityVSA license fails to install.

This article provides best practices for the management of write cache (disabling, enabling, checking, flushing) during Unity Storage Processor (SP) maintenance activities. (User Correctable)

This article assists with resolving the following error on Dell Unity arrays when trying to delete a storage pool.

LDAP servers show unreachable, and the NAS server is listed as degraded but the LDAP server is reachable. (User Correctable)

This article discusses the Time Zone functionality on the Unity Array. (User Correctable)

This article explains how to disable TLS 1.0 and 1.1 on a Unity array. (User Correctable)

This KB instructs how to activate a Unity license within Software License Central and to regenerate a Unity license to a new software version. For example, from .lic to xml

Adding or removing a LUN from a Consistency Group (CG) with snapshots fail with Error Code: 0X6000c21

This article describes one possible cause for synchronous replication configuration failure.

Excessive "Invalid previous cost" messages in the Storage Center system logs and volumes using Deduplication or Compression does not have data move to desired location after making a Storage Profile change.

The customer is unable to ssh to Unity management IP, but the customer can log in to the UI without any issue. (User correctable)

Unity system dials home with a neo14:601f5 error.

In code versions 4.5.0 to 5.0.2, a code deficiency exists which, under certain high load conditions and where data reduction is enabled, can cause a Storage Processor to panic.

Dell EMC response to the Spoiler exploits for Dell Client systems, Dell EMC PowerEdge servers, and leveraged platforms.

Hosts keep disconnecting from the Unity storage system.

Unisphere SSL Certificate did not automatically regenerate.

After importing the secure syslog server CA certificate by the secccertmgmt command and setting the IP address of the secure syslog server using the syslogadmin command, the switch fails to establish a connection with the secure syslog server.

This KB article shows how to run the array configuration capture and download it in user readable HTML Format.

This KB should help to resolve the error. Error Code:0x6500136

Dell Unity, Dell UnityVSA and Dell Unity XT remediation is available for multiple security vulnerabilities that could be exploited by malicious users to compromise the affected system.

Storage Center How to troubleshoot unsupported enclosure errors

Information about Storage Center iSCSI connectivity issues.

This article provides information about how to resolve issue with fiber channel port down on Storage Center.

Replication session goes to halted state.

Storage Center how to Troubleshoot a Storage Center iSCSI Port Down.

This alert indicates that the controller’s frontend ports are unbalanced. The frontend ports are unbalanced after every controller reboot or port outage.

This article describes the process of how to rename an existing Block Storage resource using either Unisphere or UEMCLI.

Snapshots must be removed from the snapshots page instead of the host's page.

This article provides information about how to Troubleshoot a Storage Center's iSCSI Path Down to a Server Error.

The following scripts are for use to prepare Hitachi for Live Optics collection:

Depending on your environment power requirements, there are multiple power supply and power cord options that need to be carefully considered when purchasing the SCv30x0 and SC5020 Storage Center systems.

Steps to troubleshoot Conservation Mode on SC Series Storage arrays.

Customers observe that the ESXi datastore shows more consumed space than its correlating Unity Datastore.

Microsoft Hyper-V 2012 cluster validation test fails when using Virtual Fibre Channel and zoning based on World Wide Node Name (WWNN) because of duplicate WWNN if they are not changed manually to be unique for each guest VM.

This KBA explains how automatic copy back of dynamic pool user extents take place.

On-site data centers may not have a Unity management station.

Dell EMC Unity: FAQ for Unity Replications

The health check process has determined that one or more servers do not have redundant communication paths. This error is raised to allow customers to take action to prevent data unavailable or data loss condition during a Service Processor reboot or failover.

Compelleting: SC Storage Customer Notification: Chelsio T520 iSCSI HBA Driver Fails to Respond to Read I/O Requests

ESXi Servers can get SCSI reservation conflicts if the Array LUNs are in multiple Storage Groups and the Host LUN ID (HLU) is inconsistent.

Dell Live Optics Collector remediation is available for .NET Framework that could be exploited by malicious users to compromise the affected system.

Red Had Enterprise Linux client was unable to mount Unity NAS Server NFS Share. Receiving error NFS4ERR_MINOR_VERS_MISMATCH.

User is able to Exceed Hard Quota limit

Dell Unity: Users unable to access NDMP restored data due to local admin group SID changes between NDMP source and destination NAS servers.

SupportAssist configuration fails with Error 0x6400C1F

Data mover server log is streaming RPC: 3: rpc parsing failed, version 0x4 messages

This article provides options for when a pool becomes 100% consumed.

Information about customer replaceable unit (CRU) videos for Dell Technologies ECS products

Instructions on how to upload files, screenshots, and error messages to Service Requests.

How to identify the block size used to configure the storage resources accordingly for specific applications. The block size used varies by specific drive types.

Unable to create traditional pool from Unity user interface OR RAID 5 or 10 not available when creating pool from Unity user interface. (User Correctable)

Starting from Unity operating environment (OE) version 5.4, SMB2 can be disabled using service scripts. Should SMB2 be disabled on the Unity NAS server, the IMT import of these NAS servers may fail.

The SNMP default UDP port number is 162. If the customer configures a specified port to receive SNMP trace on SNMP manager, the following steps can be followed to specify the SNMP port.

This KB details the Management account roles on the Dell Unity and Dell Unity XT systems.

The customer is using Unity’s Fail Safe Networking (FSN). Both the Primary Active and Standby interfaces are configured with a two-port Link Aggregation Control Protocol (LACP) bond. The LACP bonded interfaces for the FSN Primary Active are connected to the Primary Active Access switch. The FSN Standby LACP bonded interfaces are connected to the Standby Access switch. However, the customer’s Cisco Access Switches do not support LACP virtual Port Channel (vPC) across switches.

Automatic shrink is not activated even though there is enough free space in the file system after deleting data.

Here are the steps and precautions that are necessary for removing an existing LUN from a Consistency Group. (User Correctable)

After a successful drive replacement, the pool may still show degraded. The Alert shows that there is not enough pool spare space or spare drives to copy data from the faulted drive. The system could not start an automatic copy of data.

Upgrading ESXi hosts from VMware 6.7 to 7.0 may inadvertently turn on Storage I/O Control (SIOC) and may cause a performance issue if the settings are incorrect.

This article shows how to create a hidden share in Dell Unity. A hidden share is a share that is not displayed in the network. Hidden shares have the same security permissions as normal shares. (User Correctable) Hidden shares may be useful if you want to share a file or folder but do not want it published for everyone to see.

ESRS service can now be restarted with out remote support intervention

How to resolve the possible NFS permission issue after the SMB Active Directory domain change on a NAS server that has multiprotocol enabled. (User Correctable)

Dell EMC Unity dials home with "LUN X requires recovery" error message.

OID in SNMP traps does not match Unity MIB file on 4.0.x.xxxxxxx code

Dell EMC Unity: User/Tree quota used space is not correct on windows/mac clients

Dell EMC Servers require a security update to address vulnerabilities in Intel Microarchitectural Data Sampling. For specific information on affected platforms and next steps to apply the updates, please refer to this guide.

Unable to run root commands on Dell EMC Unity arrays.

We see Cluster and Appliance entry in SCG UI after PowerStoreOS upgrade to 3.6.1.0 and later.

This article describes managing the auto tiering of data in Unity hybrid storage pools through Unisphere.

The replication failback option "Keep remote data by discarding all the local changes" is not available for block replicated resources. There is a procedure to follow to achieve the same results.

The Veeam backups do not complete after upgrading Unity OE to version 5.1 or later. It is unclear whether other Unity OE versions have Veeam backups not working. (Dell Correctable)

Attempts to configure an external Fornetix Key Management Interoperability Protocol (KMIP) server to save and store Unity system D@RE keys fails. The following error code is seen: 0x7140900D and a corresponding error message "The KMIP server enablement operation did not complete successfully." Fornetix KMIP server software was required because VMware ESXi 8.x hosts are in use, and it runs on a virtual machine in the environment. The end user had tried to acquire Dell CloudLink KMIP software from Dell initially as it also supports VMware environments. CloudLink software is no longer available to purchase as of March 2023. The other KMIP server software approved in the Dell Unity e-Lab Navigator Compatibility Matrix does not run in a VMware environment.

This article describes the errors that are displayed when attempting to join a NAS server to an Active Directory domain (User Correctable)

How to handle the Spare Drive alert message: The system could not start an automatic copy of data from one or more drives in pool Pool(x), because spare drives are not available.

A customer tries to install the Unisphere Central license, but cannot.

This article discusses the limitations of SupportAssist in Unity OE version 5.3.

SPCv controller can hang in PHY_STOP (Physical Layer Stop) command with IOs. This can cause the SPCv controller to crash causing SP panic.

Some types of files stored on Unity filesystems may be created with the "hidden" attribute after upgrading an attached Mac computer to macOS Ventura (Version 13).

Impact - Attempting to deploy Unity VSA on improper HW configuration or unsupported HW results in rolling reboots

How to run a DR test without modifying replications state in Unity

How to failover a NAS server from Source array to DR array when arrays are members of different domains configured with a trust relationship.

Is LLDP supported on a Dell Unity array?

This KB describes one of the causes of the 0x900a008 error when creating an NFS share.

This KB describes one of the causes of SupportAssist configuration failures.

Unable to add a new Network Time Protocol (NTP) Server to the Unity array for time sync.

Attempts to configure LACP results in error: Failed: The system was unable to change the link aggregation settings. This may have occurred because of memory fragmentation. Consider rebooting the relevant SP. (Error Code:0x6000dfc)

SMI-S provider is embedded directly on Unity. The Unity SMI-S provider is always enabled. By default, the SMI-S service is listening on port 5989 on the Unity management interface. (User Correctable)

Before the upgrade to 5.1 the array was running fine. However, after upgrading to 5.1 code the customer experienced a network outage.

Data collection starts automatically every time a user clicks the "execute" in the "Collect Service Information" in Unisphere. It occurs when all the existing data collections are larger than 2 GB. (Dell correctable)

Storage Center has entered Emergency Mode and can no longer operate because there is no more free space.

Expanding a VMFS datastore completed with problems: "Adding host access to the datastore partially failed (Error Code:0x5c00106)

This article describes one of the reasons why some users cannot access some folders after the upgrade and how to resolve it.

When we cancel a pool expansion job using UEMCLI, the storage reports that the action was completed successfully although the operation continues in the background. This behavior is corrected in OE 5.1.

This article explains the procedure that must be followed in the Unity system after staging OE code from CloudIQ.

SupportAssist wizard in Unity was successful, but in the Secure Connect Gateway user interface (UI), the array status shows as failed.

This KB states how to restore a VM backup taken by Veeam software to a Unity LUN.

This article explains how to disable TLS 1.0 and 1.1 on port 443 and port 5085.

Adding NTP server fails with "Cannot create NTP servers. At least one of the specified NTP servers is not working (Error Code:0x6000840).

Number of registered email addresses for alert email notifications.

Running the checkvdm script potentially reduces DU events associated with vdm.cfg missing information.

This article explains the steps to separate and work around the issue of incorrect mapping when using LDAP where the encryption method used affects LDAP mapping.

Attempting to join NAS Server to Active Directory with LDAPS fails because of an error with LDAP Server.

Unity is NOT impacted by Security Vulnerability CVE-2023-34329 and CVE-2023-34330.

Unity CIFS NAS server-restricted group policy 'members of' is not applied if 'members' policy exists.

This article relates to the synchronization interval for asynchronous replication.

The error occurs when trying to rename a non-empty folder in an FLR enabled file system.

This article describes one solution for SSH connection failure after unplugging the cable connected to the management port and management IP failover occurs. Also, in this example, the connection is still available using the Unisphere UI.

When uploading text files to Unity's FTP server, file formatting may become invalid due to the difference between Windows and Unix/Linux end-of-line (EOL) characters. Windows uses two characters, CR+LF while Unix/Linux only uses LF. By default, Unity's FTP server uses ASCII transfer mode and since Unity uses a Unix/Linux base, all EOL characters are converted to LF. This makes files appear to be broken when read from a Windows client. To avoid this behavior, files should be uploaded using bin transfer mode. This makes sure the file is transferred "as is" with no changes. This may also be helpful when transferring image, audio and video files as they also require binary mode to avoid corruption.

After upgrading Unity some administrative issues regarding the VMFS datastore can be noticed. 1. Failure or partial failure adding or removing datastore access to ESXi hosts through Unisphere. 2. From vCenter, it is not possible to see datastore name changes made from Unisphere.

Unisphere event log, SNMP, and remote syslog are not updated.

This article discusses the method to get the file fullname path when you have the version 8.3 shortname path.

Unity 5.3 Seahawk brings some significant changes to the Unity product that will affect every customer. In the Seahawk release, the online drive firmware upgrade is periodically run on a physical Unity system to upgrade outdated drives.

This KB describes how to address the situation where there is information that has not been translated even though a language pack has been applied.

After a Unity array is upgrades to 5.2.x there is a chance "NTP server is partially unreachable" will start generating on the array.

Unisphere GUI and CLI via SSH are no longer accessible after attempting to change DNS settings. Restarting management services does not resolve the issue. It was also determined that ECOM does not start on either SP or stay running for more than 10 minutes.

This KB describes one of the causes of the Unknown status of Replication.

This article describes one of the causes of the 0x1000100 error that results from the uemcli command.

A system is either having its Management IP address configured during deployment or having the management IP address subnet changed. When a gateway is chosen, if the Subnet ID is used the Management IP configuration fails. This can occur either within Unisphere or at the command line. An error is seen about a failure to change the management IP configuration in Unisphere and also at the command line. Both Unisphere and the command line will be unable to be logged into. Access from ipmitool on either SP must be used to continue and resolve the issue.

PowerStore: Specific LDAP user(s) unable to login to PowerStore GUI with general authentication error from GUI and "Not unique" from logs

After upgrading the Common Event Enabler (CEE) version to 8.9.8.2, the AV Engine field is showing a Hex Value.

There is a change in SNMP Trap notification behavior after the Unity OE 5.2 upgrade. Before the upgrade, the system sent an SNMP alert for all configured events as often as they occurred. After the upgrade to OE 5.2 or later, only five SNMP alerts for the same event are sent within a 24-hour window.

This article describes an issue on the host side that lost some paths on HBA initiators during the code upgrade or after an SP reboot.

Migrating a vVol with associated snapshots or clones using vMotion from Unity to PowerStore, or even from one Unity to another Unity, is unsupported and will result in data corruption. You can only migrate vVols with associated snapshots or clones within the same Unity array.

What Is the Difference Between Daily and Full Data Collects? When should a Daily or a Full Data Collect be provided to Support?

Dell Technologies guidance to mitigate risk and resolution for the side-channel analysis vulnerabilities (also known as Meltdown and Spectre) for servers, storage, and networking products. For specific information about affected platforms and next steps to apply the updates, see this guide.

Dell EMC guidance to mitigate risk and resolution for the side-channel analysis vulnerabilities (also known as Speculative Store Bypass and Rogue System Register Read) servers, storage and networking products. For specific information on affected platforms and next steps to apply the updates, please refer to this guide.

Unity SRM/SRA plugin discover shows the status as "Failover in progress".

Upgrading to Unity Operating Environment (OE) 5.3 causes SSH protocol to be disabled.

When user copies multiple files to a folder in a Continuous Availability (CA) enabled share, a prompt "The destination already has a file that is named XXX" may be received for one of the files that being copied. Disabling Continuous Availability on the share may help to work around the issue.

Silver/Gold Service Plan for Unity fails with "One or more source luns do not have a remote target specified/mapped" at Application mapping phase.

Customer received vulnerability report: Vulnerability: QID: 11827- HTTP Security Header Not Detected.

ls command hung on RHEL 8.4 client when mounting Unity NFS export via NFSv4.

In a multi-appliance cluster, logs ( DatCollects, config files, metrics) are not being auto-uploaded and sent back from the non-primary appliance.

Refreshing replication remote connection between Unity 5.1.2 and VNXe2 will fail during the "Refresh remote system connections on local system" step.

This KB describes how to prevent certificate warnings when connecting to Unisphere.

This Knowledgebase article discusses CVE-2022-38023 and how it impacts Dell Unity systems.

Unity systems running 5.2 code may encounter a memory leak leading to unexpected SP reboots when accessed using SFTP.

- Mapping issue with Multiprotocol NAS Server, Windows user is not mapped to the correct Linux user.

This article describes one of the reasons why an error is generated when trying to enable Tree Quota for an existing folder.

Unity Connect Home, or Dial Home email messages received by customer email accounts have the Unity Management IP address in the subject line. This is also seen in the body of the email alert in some scenarios. This is considered a security risk if the information is received or stolen during an information breach. This knowledgebase article describes the resolution.

vCenter Server Appliance (VCSA) backup using VMware Appliance Management Interface (VAMI) did not complete after upgrading Unity to 5.1. This is due to a code issue in Unity 5.1 and later which rejects the mount request from vCenter when a slash "/" is appended to the mount path.

Some third-party Vulnerability scanning software might report weak SSH key exchange algorithm on Unity running code 5.1.X but the reported weak algorithms are disabled on Unity.

Dell Unity, Dell UnityVSA, and Dell Unity XT remediation is available for multiple security vulnerabilities that may be exploited by malicious users to compromise the affected system.

This KB provides the method to check active open file count for NFS (NFSv4 only) and active connected NFS client (both NFSv3 and NFSv4) on a live Unity system.

This article describes an event that causes a panic of the service processor (SP) at the timing of bandwidth setting changeover in Replication.

Client application reports "no space left on device" when attempting to create file(s) on a Unity File System. There is sufficient available capacity in the File System.

Disabling CloudIQ in the user interface only disables alerts, config, and performance logs being sent to CloudIQ. This does not prevent the daily data collections from being generated and sent to CloudIQ.

Attempt to create an SMB share named "Home" fails with error "A Share With The Specified Name Already Exists In The NAS Server. (Error Code:0x900a008)

Explain storageoffline in-time DC generated after upgrade to 5.1 or above.

HP LaserJet Multi-Function Printers (MFP) may fail to access network folders on Unity systems following a Unity upgrade to 5.2 code

This KB describes how to set up umask for Unity's FTP configuration.

This KB describes how to deal with the situation when Remote Syslog setting is not shown in the Unisphere UI.

Change the location of the Unity NAS Server Security Log file [c:security.evt] and increase the log size.

This article explains why bandwidth schedules do not synchronize at the expected time when the time zone is set to any time zone other than UTC.

Shrink operation on a thick file system does not return the space back to the pool.

After upgrade to 5.1.x a Replication Full Sync is started unexpectedly.

The article describes how to start using UEMCLI on Unity arrays for array management, configuration or monitoring.

When a system drive fails in a traditional pool, a hotspare is used to copy customer data luns. Once the system drive is replaced, the system drive does not become available as a hotspare. This could lead to a hotspare rule failure as there is one less hotspare available.

The Audit Log path was set by the customer in the user file system. After rebooting SP in Unity OE 5.1, the path was changed to the default location.

After Windows update Windows server can no longer connect to event logs exported from NAS servers on Unity

During an NDU to 5.1.X code, if a rebalance operation is running, SP can panic.

During file system creations or file system mounts, there is a chance of an unexpected Storage Processor (SP) reboot or file system going offline if Tree Quotas are enabled. Sometimes, a storage processor has remained in Service Mode after the unexpected reboot.

The replication mode might get changed from sync to async after upgrading to code 5.2. This leads to replication connection validation failure and impact replication-related operations like pause/resume/failover/failback.

This article describes one of the reasons why the following message is generated "The NAS server xxxx in the domain xxxx cannot reach any domain controller."

Unisphere UI fails to log in as LDAP User when TLS1.0 is disabled with message "The logged in user is not authorized to access Unisphere."

There is the KB 000021201 for the general SFTP passwprdless login (https://www.dell.com/support/kbdoc/en-us/000021201). The example in the KB 000021201 is not for the SMB account. The current KB provides another exmaple for the SMB account.

An issue was found where a custom banner was no longer present when logging into Unity CLI or external uemcli. This happened after recent Dell Unity OE upgrades from 5.1.2. or 5.2.0 through 5.2.1.x. The custom security banner was showing up correctly in Unisphere at login. Every time an SP reboots or there is an OE upgrade and both SPs reboot in controlled sequence, the issue was observed.

When the Unity NAS server LDAP config is changed from auto to manual setting and a third LDAP server is added. The ldap.conf may get overwritten by a default or autogenerated ldap.conf.

One reason for unable to create a new LUN or rename an existing LUN.

User already deleted the LDAP configuration and was attempting to delete the user/group entries.  Because there is no proper configuration to reach LDAP servers the deletion job is failing with error 'Requested user or group was not found'.

When configuring NDMP backups on Unity systems, customers might have a situation where they must use different TCP data port ranges for NDMP data/mover listening.

This KB describes the cause of error code 0x1000100 and its solution.

How to check expire date of SSL Certificate on CLI and Unisphere UI

While creating the Async/Sync Replication Interface an error is encountered "The specified Network interface could not be created."

The article describes managing the auto tiering of data in Unity hybrid storage pools through Unisphere CLI (UEMCLI).

Customer configured forest level LDAP authentication on Unity for GUI management. The LDAP connection was verified OK but customer was unable to add role mapping for LDAP users.

Users from trusted domain can't access the Unity NAS server with selective authentication being enabled in the domain trust configuration. When selective authentication is enabled, users from trusted domain can only access the NAS server if they are granted with special permission.

Customer receives alert on NAS server reporting domain controller not reachable when one or more Domain controllers configured are RODC (Read-Only Domain Controller)

Deleting async replication sessions of multiple thick LUNs might cause disk overload and impact other services.

The NAS server is showing degraded in the user interface because it is unable to perform bind operation with LDAP server using anonymous user.

Unity system dials home with a neo14:60196 error. This is normally accompanied by other dialhomes, such as neo14:60258 and neo14:600F4.

Information on whether or not Dell Unity products are vulnerable to CVE-2021-42287.

Compatible with VPlex 6.0 and Unity

Q&A: Can a LUN or Filesystem be restored if accidentally deleted?

Do not apply iDRAC updates to a Storage Center Controller independently of a SCOS upgrade.

Replication connection validation fails after upgrading code to 5.1 because the ping function is added to the validation code but some customers have disabled ICMP in their environment due to security policy. The workaround is to enable ICMP in the customer's environment for the replication interface pairs.

In Dell EMC Unity code level 5.0 an issue was introduced, where edited files from Microsoft Excel and Photo Viewer are not saved correctly.

VMware vCenter v7.0 Update 2 (7.0.2.00200) when used with Dell EMC Unity OE 5.0.x and 5.1.0 has been determined to cause a problem with VASA registration failing when adding vCenter to Unity or attempting to register the Unity VASA Provider from vCenter Storage Providers Add option. As a result vVols are not usable.

This KB article details the susceptibility of VNX, VNXe and Dell Unity products to the vulnerabilities detailed in CVE-2022-22963 and CVE-2022-22965, collectively called "Spring4Shell" vulnerabilities

How to perform storage performance analysis and sizing of ASP capacity and individual disks for an IBM i host system.

Receiving warning message when trying to modify the NTFS permission on the root of the share folder.

After upgrading to 5.1.2 the SPs may panic and go into service mode due to an issue with processing invalid NFS exports.

Unable to run setfacl on Unity NFSv4 export.

This article describes one of the causes of performance issues when using CIFS sharing with DaaS (Desktop as a service) or VDI.

Dell UNITY:How to change the TTL on DNS records created by Unity NAS server(DELL Support)

This article explains how to save a SupportAssist from a Storage Center system to a USB flash device.

When Continuous Availability (CA) is enabled on an SMB share, upgrading to version 5.1.2 may induce SP panics and SPs going in to service mode.

After customer upgraded to Unity OE 5.1.0.0 customer is seeing alerts 'Action: Update Device | Status: 200' every 10 minutes in their centralized SRS GW

Customer CIFS or NFS outage due to CIFS Pool:SMB2 BLOCKED Threads when CA enabled on windows shares.

CIFS servers lose connection after GPO applied to enforce AES encryption types

Migrating data to a Unity FLR enabled file system results in the lastTimeWrite-Date being changed for some files to a time in 1980.

UnityVSA license installation failed with the following error: "The specified license file cannot be installed because it is not applicable to a dual-SP UnityVSA. (Error Code:0x2800136)".

Under certain conditions in all Unity OE code versions below 5.1.x, a CAVA request timeout can exceed the timeout of another operation, causing that operation to fail and the SP to panic.

This article describes one of the reasons why a file or folder on Unity's SMB Share cannot be deleted, and possible solutions.

DHSM third party applications (non VNX DHSM) are incompatible with File IMT

Unity system is using vVol datastores under vCenter 7.0.2c and was upgraded recently to OE 5.1.0. Now browsing the vVol datastore under vCenter shows it as empty with no Virtual machines however the VMs are running without any problems.

This article describes how to solve the problem when the CIFS Audit function stops after the file system becomes full.

A pool slice reservation leak causes various failures, including failed creation of snapshots or LUNs

When CA (Continuous Availability) is enabled, Write response is longer than 100ms.

Drives can experience multi-bit CRC errors and go offline.

If User Quota is enabled, when you check the size of the drive-mapped space from Windows client side, it is expected to show the size allocated by User Quota. However, after rebooting SP, the file system size was displayed instead of the User Quota size.

Dell Unity, Dell UnityVSA, and Dell Unity XT remediation is available for a Cross-Site Scripting Vulnerability that may be exploited by malicious users to compromise the affected system.

Under certain out-of-space conditions, an upgrade to 5.1 may trigger file system offline or rolling SP reboots.

After upgrading to 5.1, some users are unable to log in to Unisphere when their accounts are managed by LDAP.

Unable to save the configuration file due to an error when running save configuration from Unisphere UI.

This article describes a condition that affects Unity systems that have been recently upgraded to Unity OE version 5.0.6., which introduces support of secure RPC function.

Dell EMC Unity software reports error in Unisphere when an internal SSD is fully worn; however, there are no reported Alerts or dial home errors.

Upgrading to 5.1 breaks any calls that are issued using the nfs_v3_readdirplus call from Solaris NFSv3 clients.

If inconsistent block size settings are used in the 2-way NDMP data transfer path, the NDMP backup will not work and the tapes used during the backup may be marked full prematurely. It has been observed that the NDMP backup will start but the tape loaded in the drive gets marked full immediately, even if there is space remaining on the tape.

FTP/SFTP download may failed when customer FTP/SFTP server (NFS client) use Unity NFS share on Unity with NFSv4.0/NFSv4.1 as backend storage.

This is how you can check if ODX is in use on Unity

Dell EMC drive capacity labels on the handle may not match the vendor top cover label based on visual inspection

When a single PowerStore node is powered down for service or maintenance procedure, the surviving node that is now servicing all I/O and cached data displays a white "Do Not Remove" hand LED to warn against removal. PowerStore 500T does not display this during its initial 2.0 release but this is addressed in the next Service Pack.

IMT migration job that is stuck in MIS_PAUSED state due to dirty files with read-only attribute.

Increased latency on NFS exports lasting about 30 seconds when the export settings are modified when using DNS names for hosts not IPs.

High number of hanging jobs "Delete VMware Virtual Volume" Unity Administrator did not initialise any of those jobs (all started automatically)

Under certain conditions, a Unity SP can panic when communicating with a domain controller in a Windows domain on 5.0.5 code.

Dell EMC Unity, Dell EMC Unity VSA, and Dell EMC Unity XT contain remediation for an ICU vulnerability that could be exploited by malicious users to compromise the affected system.

A recent kernel change was introduced to the Oracle Enterprise Linux distribution that changes the behavior of how IO limits are calculated on block devices.

Step by Step guide on using Dell Storage Manager client to automatically set Best Practice settings on Host servers.

SNMP Sevices will stop functioning on Storage Center when enabling the SNMP traps on SCOS version 6.7.x

There is a display issue where Dell Storage Manager may report Active Space On Disk as being much larger than the Total Disk Space.

The movement of individual drives is not permitted between one Storage Center system and another Storage Center system or between an integrated controller enclosure and expansion enclosures within the same Storage Center system.  Moving drives will impact warranty coverage. Moving enclosures between systems will be permitted if the warranty contract is updated to reflect the change.

Invalid Request error message in Dell Storage Manager when trying to create a replay profile.

Here you find how to set up the embedded SupportAssist on Dell (formally Compellent) SC devices, and how to activate the Secure Console.

Early drive failures may occur for Self Encrypting Solid State Drives if they are managed into a secure disk folder when the SCOS version is not at the minimum required for SEDs.

The purpose of this document is to assist customers in understanding the changes to Storage Center OS (SCOS) 7.3 pertaining to Conservation / Emergency Mode.

Dell EMC Unity, Unity XT, and Unity VSA contain remediation for multiple security vulnerabilities that could be exploited by malicious users to compromise the affected system.