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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.
Updated: July 02, 2026
ID: 000178106
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.
Updated: July 01, 2026
ID: 000178082
This article shows how to gather logs and data to diagnose Unity array performance issues.
Updated: July 03, 2026
ID: 000022748
This article explains how to configure the file filtering feature on Dell Unity file systems.
Updated: July 03, 2026
ID: 000022468
A Dell Unity Quota Tree allows administrators to limit the amount of storage consumed by a specific directory within a file system, while Quota Policies determine how usage is calculated.
Updated: July 03, 2026
ID: 000022551
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'.
Updated: July 03, 2026
ID: 000058805
Integrated ESRS cannot be enabled on Unity due to a Site ID mismatch. Unisphere reports error 0x6400bb9. (User Correctable)
Updated: July 03, 2026
ID: 000065367
A dial home alert (14:38004e) has been generated indicating that the “service” user home directory has exceeded its allocated disk space, potentially impacting system operations such as core dump file storage.
Updated: July 02, 2026
ID: 000188518
This article addresses a UEMCLI execution failure characterized by Error Code 0x6000001, where the system returns an “Operation failed” message indicating access has been denied.
Updated: July 02, 2026
ID: 000090633
This article explains the Pre‑Upgrade Health Check (PUHC) failure "platform::check_dimm_error_status_1." It also addresses a persistent PUHC fault on "SP X memory module X" in OE 5.5, even after Dual In-Line memory module (DIMM) replacement.
Updated: July 01, 2026
ID: 000386188
This article discusses how to download and upgrade the drive firmware on all Unity arrays except the virtual UnityVSA appliance. UnityVSA is not impacted.
Updated: July 01, 2026
ID: 000021322
This article explains the "dm::check_filesystems_health_4" warning during a Unity pre‑upgrade health check (PUHC). The PUHC indicates potential file system issues to review before upgrading. It outlines the cause, verification steps, and recommended remediation to ensure that the system is healthy before upgrading.
Updated: June 30, 2026
ID: 000052548
This article explains the "flr::check_if_storage_pool_recovery_is_required_3" warning on Dell Unity arrays. This indicates that a storage pool may require recovery. It covers the cause of the warning, how to assess pool health, and recommended actions before proceeding with system operations or upgrades.
Updated: June 30, 2026
ID: 000052020
This article describes one cause of a "Fatal error detected" message after a Dell Unity OE upgrade.
Updated: June 30, 2026
ID: 000446018
Blocked processing threads inside a Dell Unity storage system can prevent the array from responding to client I/O requests. When this occurs, clients lose access to SMB (CIFS) or NFS shares, despite Unisphere displaying all NAS servers, file systems, and shares as "online."
Updated: June 30, 2026
ID: 000058575
Unity Secure Remote Services (ESRS) Registration can fail with Error Code 0x6400b76. (User Correctable)
Updated: June 30, 2026
ID: 000056148
Explore the Dell End of Service Life (EOSL) and End of Life (EOL) list for converged infrastructure, storage, and storage networking products. Access End-of-Life documents for hardware, software, and firmware release and service dates
Updated: June 29, 2026
ID: 000185734
Dell Unity OE Matrix, release dates, recommended code, and so on.
Updated: June 28, 2026
ID: 000020641
Dell Unity array dials home with error code 1:12dc501: An internal system service X is offline. Some system services may not be available.
Updated: June 26, 2026
ID: 000022521
How to configure password-less SSH access in Unity.
Updated: June 26, 2026
ID: 000348009
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.
Updated: June 26, 2026
ID: 000183486
This document highlights minimum, recommended, and latest code versions for Dell Technologies Enterprise and Data Center Infrastructure products. Dell carefully evaluates and monitors code deployment data to ensure that product releases meet our stringent expectations to provide our customers with reliable products and solutions.
Updated: June 22, 2026
ID: 000205512
This article discusses whether Unity is susceptible to CVE-2026-20833.
Updated: June 19, 2026
ID: 000466883
During file system creations or file system mounts, there is a chance of an unexpected Storage Processor (SP) reboot or a file system going offline if Tree Quotas are enabled. Sometimes, a storage processor has remained in Service Mode after the unexpected reboot.
Updated: June 16, 2026
ID: 000200516
During the Pre-Upgrade Health Check (PUHC) for a Dell Unity array upgrading to Unity OE 5.5.x or later, the check_KMIP_servers validation may fail.
Updated: June 10, 2026
ID: 000473903
After upgrading to Unity OE 5.5.x or later, configuring or verifying LDAPS for Unisphere Management may fail with error 0x6000193. This occurs even though the LDAP server certificate appears valid and LDAP queries succeed using ldapsearch.
Updated: June 10, 2026
ID: 000473894
This article describes Data Reduction considerations and best practices on a Dell Unity array.
Updated: June 10, 2026
ID: 000022795
Dell Storage Simple Support Matrices on E-Lab Navigator provide the optimal interoperability for your storage solution.
Updated: June 05, 2026
ID: 000126411
Customer configured forest level LDAP authentication on Unity for UI management. The LDAP connection was verified OK, but customer was unable to add role mapping for LDAP users. (User Correctable)
Updated: June 03, 2026
ID: 000203550
How to downgrade the max NFS version from 4.2 to 4.1 on Unity running OE 5.5.
Updated: June 01, 2026
ID: 000328321