Data Domain

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.

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.

This article outlines how to access and view Data Domain Licenses and Certificates activated from Transformational License Agreements (TLA).

Filesystem encountered an error and restarted with error "Failed to restore seeding resume context" in the logs.

Using both NFS and CIFS protocols can lead read or write issues.

Data Domain Restorers (DDRs) run a proprietary file system known as the Data Domain File System (DDFS). Due to how DDFS stores data and corresponding metadata, there are limits on the maximum number of files that can be stored in a single directory. Exceeding these limits can cause degraded performance, timeouts, and system instability. This article explains the directory file limits, the technical reason for the limits, and the risks when limits are not adhered to.

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.

The UI becomes unresponsive and RPM uploads fail because the iDRAC does not supply Secure Boot entries in host_bios.json, causing the sms_system_get_secure_boot API to error.

This article explains how to enable the Data Domain Boost (DD Boost) plugin logging when troubleshooting issues related to Boost and BoostFS. This is called a precert log.

Data Domain customers must not modify SNMP or other configuration settings within iDRAC. Data Domain uses iDRAC SNMP internally for platform hardware monitoring and alert processing, and customer changes can interfere with expected system behavior, generate support inquiries, and are not supported by Dell Support.

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 what Session Security is on Avamar, how it works, and how to manage it.

Data Domain systems upgraded to DDOS 8.3.1.40 and DDOS 8.6.1.20 stop reporting to DDMC 8.5.0.0 or DDMC 8.6.0.0.

This article explains how to use the GoAV dd check-ssl feature to resolve SSL connectivity issues between Avamar and Data Domain.

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.

How to determine which files were recently deleted or expired.

This article defines the diagnostic approach of troubleshooting Virtual Machine (VM) backup or restore performance issues when using the NetWorker VMware Protection (NVP) vProxy solution.

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

Backups to a new Data Domain fail after a root-to-root migration.

When an NFS client mounts an exported DD MTree, it sometimes also shows a separate mount for the MTree's ".snapshot" subdirectory, which the NFS client or system administrator has not manually mounted, this KB explains why and the possible consequences

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

This KB article describes how to configure MTree replication using the UI.

This article details the steps required to create an Mtree Replication Context on the CLI.

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

Garbage Clean (GC) process is unavailable during copy phase on system that is configured with Cloud Tier on Dell ECS Object Storage and cannot be cancelled. It also prevents starting GC process on Active Tier.

Direct connect is a network topology where two Data Domain, PowerProtect Data Domain, IDPA, or other data protection systems are connected directly through dedicated interfaces without an intermediate switch or router. This article explains direct-connect networking requirements, common deployment scenarios, known issues, and troubleshooting methods for connectivity, routing, performance, and interface-related failures.

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

When a DDOS upgrade is performed on version 8.7 or earlier, the RPM signature check may fail with the following error message:  RPM ".rpm file" signature is invalid.

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.

Feature license mode changes from served to grace after upgrade.