Dell EMC Unity XT 880

无法在 Unity NFSv4 导出上运行 setfacl。

LUN 或文件系统暂时进入离线状态，但会自行恢复联机状态。

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

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

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

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.

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 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.

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.

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

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

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

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.

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

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

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

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.

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

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

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

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

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)

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.

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.

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

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.

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

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.