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.

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

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.

Data Domain sysadmin/SO password resets no longer require Support intervention when running DDOS (7.10.1.40 or newer). A password reset token is sent to the registered email address. Copy the token to a supported USB drive, insert it into the system, and log in as sysadmin or security officer to reset the password.

Host certificates allow browsers and applications to verify the identity of a Data Domain system when establishing secure management sessions. HTTPS is enabled by default. The system can use either a self-signed certificate or an imported certificate from a trusted Certificate Authority (CA). This article explains how to check, generate, request, import, and delete certificates for HTTP/HTTPS on Data Domain systems.

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 follows established and approved procedures and returns the system to a compliant and secure state once the work is complete.

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.

This article provides download links and status information for current PowerProtect Data Domain Operating System (DDOS) releases, including feature and Long‑Term Support (LTS) versions. It also outlines upgrade considerations, documentation references, and supported platforms.

Creating a certificate signing request (CSR) on a Data Domain and importing the signed certificate

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.

ephemeral UDP port range usage.

This KB explains the value of IDRAC and how to configure it on most DD systems

In DDOS 8.5 and 8.6, an internal defect can cause SupportAssist to appear configured but not fully registered after an upgrade. This issue triggers a mandatory contact information pop-up in the Data Domain System Manager (DDSM) GUI, preventing access to standard management pages.

After upgrading the Data Domain Operating System (DDOS) from a pre-8.7 release to DDOS 8.7 or later, MTree replication contexts may fail to synchronize and continuously restart due to changes in SSL handling.

After upgrading to DD OS 8.6, the system repeatedly posts “New DD OS version available for upgrade” alerts; the alert logic reposts when release metadata changes, a side effect of one‑click upgrade.

This article outlines how to manage checkpoint backups (CP-Backup) with Avamar and Data Domain.

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

Dell PowerProtect Data Domain remediation is available for multiple security vulnerabilities that could be exploited by malicious users to compromise the affected system.

Dell PowerProtect Data Domain remediation is available for multiple security vulnerabilities that could be exploited by malicious users to compromise the affected system.

This Article describes how to implement the Data Domain snapshot feature with NetWorker to provide protection against accidental deletions or data loss.

DD Boost protocol connection failures observed when using two-way-password authentication and using multiple connections in parallel in Data Domain Operating System (DD OS) version 6.1 and Data Domain Virtual Edition (DDVE) version 3.1