DD OS

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.

This health check tool is designed to triage common and performance issues reported for DDVE system.

This article explains an issue with the Data Domain Virtual Edition (DDVE) system recovery function caused by a different encryption key format between the old and new systems.

Data Domain systems automatically monitor for hardware, software, and environmental conditions that may require service. When certain alerts occur, the system can automatically open a Dial Home Service Request (SR), either immediately or after a short monitoring period. This proactive SR creation ensures timely support while reducing unnecessary or duplicate cases.

When the https or "ca trusted-ca" certificate expires on a Data Domain, it causes issues when trying to access the web UI. Generating a new certificate resolves the issue.

The Transport Layer Security (TLS) certificate changes contained within impact Data Domain systems that are configured with Cloud Tier and Data Domain Virtual Edition (DDVE) deployed on Azure Cloud platform with Active Tier on Object Storage (ATOS). Dell Technologies recommends installing the new certificates at earliest opportunity to avoid any disruptions.

Updating DD Boost imported certificates for all Data Domains (DD).

PowerProtect Data Protection Series: Protection Storage or Data Domain: Security Officer Account Resolution Path

Determining the file system cleaning schedule and setting the schedule

DD enforces stricter FEC validation during interface configuration; errors originate from DD, not Cyber Recovery (CR). CR (by 'securecopyanalyze') only triggers validation, while DDOS enforces it. FEC is unsupported on some Intel NICs (for example, X710-T4L), so code must ignore registry FEC settings.

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

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

Data domains with intel cards interface links may go down with tx_timeout recovery unsuccessful, device is in an unrecoverable state.

This article serves to assist on issues encountered with failed DDOS login or access.

A daily SupportAssist alert may be generated on Data Domain systems at 08:00, reporting: Error communicating with ESRS gateway This alert is caused by the am_email.sh script invoking connectemc_send during the SupportAssist alert-summary process. As a result, the system generates HTTP 401 errors and raises the ESRS gateway communication alert.

This page features core documents produced by Dell Content Engineering and Translation (CE&T) team for the Dell PowerProtect Data Domain products.

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

After upgrading DDOS, receive the error "Default authentication mode for DD Boost clients does not provide over-the-wire encryption."

Access detailed installation, upgrade, and maintenance guides for Dell PowerProtect and Data Domain hardware, including models DD6300, DD6900, DD9900, and more

This article provides a clear, model‑by‑model breakdown of the recommended BIOS and iDRAC firmware versions for each supported DDOS release across the DD series platforms. It is designed to help you quickly confirm which firmware levels align with your system’s DDOS version, reduce compatibility issues, and ensure that your environment stays stable, secure, and fully supported. Use the tables below to find the right BIOS and iDRAC versions for your specific DD model in seconds.

This knowledge base article addresses Data Domain OS compatibility and readiness for leap second events. It also covers frequently asked questions that have been verified to ensure proper handling of leap second adjustments within Data Domain environments.

Dell PowerProtect Data Domain systems provide two CLI commands to diagnose system health: system health check (DDOS 8.4.0 and later) for combined hardware and software diagnostics, and support healthcheck hardware (DDOS 7.10.1.40 and later) for hardware-only diagnostics. Both commands evaluate component status, report failures, and provide recommended remediation steps. This article explains how to run each command, interpret the output, and manage the proactive health check schedule.

Upgrading DDOS affects not only the PowerProtect DD/Data Domain system, but also every application, plug‑in, client, and protocol that interacts with it. This guide walks you through how to use E‑Lab Navigator to confirm compatibility before upgrading DDOS, with examples for each protocol and integration. This article is written for clarity and practicality, so you can confidently validate your environment and avoid upgrade‑related outages.

This article describes how to avoid panic with the Encryption Key rotation policy if the Low Bandwidth Optimization (LBO) option is enabled for replication and how to enable automatic key rotation without file system restart.

This article describes NetBackup command‑line tools that are used to validate Virtual Tape Library (VTL) functionality during initial configuration or when troubleshooting potential device issues. These commands allow testing outside of the NetBackup UI to confirm device visibility, robot behavior, drive loading, and tape operations.

This note was created to explain that users that login with NT account that have local admin rights, do not have the ability to create local admin users. This is working as designed.

This guide has been created to assist customers on troubleshooting mail server issues.

The Data Domain Operating System (DDOS) can be upgraded by following the instructions in this article.

On systems with Long-Term Retention/Cloud Tier (LTR/CT) configured, the cloud profile may stay in "Disconnected" status even after resolving the capacity issues with the cloud provider.

This knowledge base article explains what happens when an unexpected file system restart occurs, the potential alerts encountered and what information to capture for triage purposes.