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 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

When configuring an external key manager (KIMP), if trust between the DD and the KMIP server is through a chain of trust (KMIP certificate is not issued by a root CA, but by an intermediate CA), this cannot be properly configured from either the DD CLI or the UI.

Prediction Enabled Automatic Cleaning is run only when its prediction engine determines whether used capacity exceeds a configured percentage within a configured time.

This article answers common questions about Data Domain licensing, including electronic licensing (ELMS), license management, and deployment using Software License Central.

This document serves to help with identifying the error or and fault and provide a resolution path.

This article describes how to migrate AWS Elastic Block Store (EBS) volume from gp2 to gp3 type for Data Domain Virtual Edition (DDVE) appliance deployed in AWS cloud platform.

Data Domain Virtual Edition (DDVE) system upgrade fails with filesystem shutdown error.