DD OS

This document highlights minimum, recommended, and latest code versions for Dell Technologies Enterprise and Datacenter Infrastructure products. We carefully evaluate and monitor code deployment data to ensure that product releases meet our stringent expectations to provide our customers with reliable products and solutions.

Data Domain Capacity Resolution Path.

Guide to demonstrate the details needed to troubleshoot Fiber Channel connectivity from NetWorker clients.

Use mminfo to extract deduplication statistics for a NetWorker save set on a Data Domain; the output follows version:cloneid:backup:pre‑compression:post‑compression and shows deduplicate compression process.

This article intends to help users conduct a one-hop upgrade from DDOS 6.x to DDOS 7.x on Data Domain using special Minimally Disruptive Upgrade (MDU) RPMs.

This article outlines how to fix the issue and reenable the file system when the Data Domain File System (DDFS) panics with the following PANIC string: PANIC: ddr/dm/dmbt_iface.c: dmbt_update_entry_nolock

DDOS upgrade continuously reboots during the BIOS upgrade task. The iDRAC job queue shows the Firmware is updating the BIOS.

This article describes the procedure to configure SNMP for iDRAC on retention-lock compliance enabled Dell Data Domain systems.

Backups of large save sets intermittently fail when writing to Data Domain. The error observed is "5057-File handle is stale." This may be observed on various data types but is specific to large backups that span many hours.

This article provides an overview of the maximum number of interface groups (ifgroups) supported, and the maximum number of interfaces and clients supported in the ifgroups.

This article explains how to manage time synchronization on systems integrated with Active Directory (AD). It includes steps to verify time sync configuration, detect potential conflicts between Network Time Protocol (NTP) and AD time control. It also provides commands to disable Common Internet File System (CIFS) time sync and ensure proper time management. It also includes validation steps using logs and system status checks to ensure correct configuration.

How to setup Commvault with DD Retention Lock

The error "Registry key collection.1.expunge.next.schedule.time does not exist" may appear when the "filesys clean show schedule" command is run on newly installed Data Domain.

How to Manage SMT tenants with tenant user or tenant admin using UI (DDMC and DDEM).

This article outlines the procedure for performing an offline firmware update on Aries-KP model drives (HUS72604CLAR3000 and HUS72604CLAR4000) from version N9C0 to NE70.

This article explains why an IBM iSeries system may fail to VARY ON a Data Domain Virtual Tape Library (VTL) after the number of storage slots is increased beyond the supported limit. It also provides guidance on verifying slot counts and resolving the issue.

If the "Avail GiB" value is 0, this indicates that the Active Tier is truly 100% full. Backups cannot be expired or written, snapshots cannot be created.

Answers to questions for Multifactor Authentication (MFA) using RSA

Attempts to delete a mtree or DDBoost that is empty and the retention-lock (enabled or disabled) fails.

This article describes Long-Term Retention (LTR) basic concepts, configuration, and frequently asked questions (FAQ) relating to LTR functionality.

Basic troubleshooting steps to investigate data movement failures or issues.

After a fresh deployment of Data Domain Virtual Edition (DDVE) in Microsoft Azure, replication authentication may fail due to certificate subject mismatches caused by Azure‑assigned DNS suffixes, hostname length limits, and automatic use of localdomain in certificates.

Starting with Data Domain releases from April 2026, updates have been introduced to iDRAC operator user behavior as part of Dell’s ongoing security enhancements. These updates help protect your system by preventing prolonged or unauthorized privileged access, while continuing to ensure full supportability. When maintenance that requires elevated access is necessary, Dell Support will follow established and approved procedures and will return the system to a compliant and secure state once the work is complete.

This article provides a quick reference for identifying the PowerEdge server models and their corresponding generations used in PowerProtect Data Domain systems. Each model aligns with a specific generation of PowerEdge hardware, which determines performance characteristics, component compatibility, and support life cycle.

Simple Network Management Protocol (SNMP) traps fail to send if the SNMP trap host configuration includes a port number. A defect in IP address validation introduced in DDOS 8.3 and 8.1 and 7.10.1.40 causes this issue

Applying an ELMS License to a DD or DDVE may be performed using the DD System Manager or DD CLI.

This knowledge article provides a collection of frequently asked questions (FAQ) about Data Domain Data At Rest Encryption (DARE) in a consolidated location for ease of reference.

How to reset or regenerate certificates due to expiration (or misconfiguration).

All connectivity from the Data Domain to the Secure Connect Gateway is working, but CloudIQ is not receiving data.

This Guide is based on steps from DDOS code 7.9.