Data Domain

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

This article outlines the certificate requirements for enabling the Cloud Tier feature on Data Domain systems using Google Cloud Storage. The guidance applies to systems deployed on physical hardware or on-premises virtual platforms running DDOS 6.2 or later.

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 document describes how to access the DD3300's console through iDRAC.

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.

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 provides information describing the contents of the "Streams" section of the system show performance command output.

This article explains how to reclaim storage space on Data Domain Virtual Tape Library (VTL) systems when using IBM i. Expiring a tape in IBM Backup, Recovery, and Media Services (BRMS) does not immediately free space on the Data Domain system. Additional steps are required to release the storage.

How to collect the CDRA and CDRS components for troubleshooting purposes.

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.

Support bundle generation taking excessively long, which may cause issues if integrated with DLm systems.

Data Domain destination system configured with MTREE replication may report higher usage if the source system has fastcopy files in the same MTREE.

DD Boost, NFS, and VTL protocols are disabled, and not able to reenable.

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

This article describes how to perform the disk rescan procedure on a Dell Data Domain system. The rescan operation manually polls all disk drives, forcing the system to reevaluate their state. While DDOS typically performs automatic scans, a manual rescan may be necessary if a replacement disk is not recognized.

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.

The command "filesys show space tier active local-metadata" on applicable DDVEs does not match the total number of virtual disks assigned to the DDVE local metadata space.

This article explains cloud tier cleaning and garbage collection for long term retention in DDOS 6.0 and later, including how cloud units operate, how cleaning is scheduled, throttled, and triggered, and the differences between active tier and cloud tier cleaning processes.

An issue was identified on cloud Data Domain Virtual Edition (DDVE) using an Active Tier on Object Store (ATOS) configuration. The issue is caused when a DDVE has more than one active capacity license subscription assigned to the DDVE, but one of them is expired.

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

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.

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

This article explains how support for newly introduced regions can be added for already supported and qualified Cloud Tier providers on Data Domain systems.

DataDomain clean (GC) is scheduled to run on particular days and times. In more recent DDOS versions, when there is any such schedule and, for any reason, the clean process cannot be started, this is noticed by the system monitoring daemon, which raises an alert.

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.