Data Domain

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.

Network File System (NFS) allows a system to share directories and files with others over a network. This article is helpful in verifying whether an NFS export is configured correctly. NFS configuration, mount options, and client configuration. Mounting and Verifying Exports on the NFS Client.

IDPA Protection Storage (Data Domain) system with Cloud tier integrated usually has 3 Capacity Usage metrics, Active Tier Capacity, Cloud Tier Capacity and Total Capacity. Avamar Capacity dashboard displays total capacity on the Data Domain dashboard and not the Active Tier Capacity.

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 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 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 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 article provides estimates on scheduling lead time when booking Remote Proactive Services (RPS) upgrades.

This article discusses how Data Domain File Systems (DDFS) may restart with default or panic with malloc error during data-movement to Cloud Tier.

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.

This article provides best practices to safely shut down or reboot Data Domain systems using the command-line interface (CLI) or user interface (UI). These practices help to ensure data integrity and system stability.

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.

The article outlines DNS record setup and steps to replace primary and secondary DNS servers on the on‑premises Cloud Disaster Recovery Add‑On (CDRA) by SSH or console, then verify the change.

This article explains using the Data Domain Command-Line Interface (CLI) to dump the file and directory listings for individual MTrees or for the file system (FS) as a whole.

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.

Port Requirement: This article lists the TCP and UDP ports Data Domain uses with configuring firewalls to allow access in and out of the Data Domain.

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.

This article describes how to resolve the condition where a disk drive is in a failed, absent, or powered off state.

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.

This article describes how to assist with issues relating to high space usage or a lack of available capacity on Data Domains.

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.