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.

Veeam UI Displays Different Capacity Values When Data Domain Hard Limit Quota is Configured and Enabled.

Best Practices for configuring Access Groups in a Virtual Tape Library (VTL) environment.

This article outlines a step-by-step process to determine whether a Data Domain system is unresponsive due to internal system faults or external connectivity issues.

The NetWorker vProxy solution is used to protect the vSphere environment. The file-level restore (FLR) fails for all Virtual Machines (VM) with the signature length error. Data Domain self-signed CA certificate has expired. Renew Data Domain certificate as shown in Dell KB 198864.

HA create command fails with either of these two errors: **** Failed to configure HA: unable to communicate with the peer node via the interconnect. Or **** Failed to configure HA: Communication with the peer node timed out.

This article describes expected performance for Data Domain Virtual Edition (DDVE) using Active Tier on Object Storage (ATOS).

This article explains why DD Boost storage units must not be accessed over CIFS shares.

This article explains the message "A filesystem restart is necessary to synchronize these two states" appearing with file system encryption enabled.

This article discusses an issue that may prevent the Data Domain File System (DDFS) from starting on Data Domain Virtual Edition appliances after the system serial number has changed.

This article provides steps to set a warning for space utilization on Data Domain systems.

This article describes how to Identify licensing for active and cloud tier and add storage on the DD3300.

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

This KB article explains how to use an external system for creating Certificate Signing Request, and create a signed certificate by an external CA, so that the resulting certificate may be imported in the Data Domain for use in HTTP (DD GUI through SSL)

NetWorker VMware Protection (NVP) Virtual Machine (VM) backups intermittently fail with the following error observed in the backup session log "Warning occurred while releasing writer resources: Error closing temp data file: Error closing file 'SAVESET_PATH' on Data Domain 'DD_HOSTNAME': [5029] RPC operation/function failure "

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.

VxRail datastore creation on Data Domain (DD) meaning

The DD3300 platform has several external connections that are not necessary, and as such are not used or supported. This article describes the supported connection types and the preferred connection method.

This guide explains what Dial Home is on Dell Data Domain systems, what data it sends to Dell, and how each connection method and report type works, while setting expectations for how these automated reports speed issue detection, simplify support, and improve system‑health visibility.

Data Domain systems automatically monitor for hardware, software, and environmental conditions that may require service. When certain alerts occur, the system can automatically open a Dial Home Service Request (SR), either immediately or after a short monitoring period. This proactive SR creation ensures timely support while reducing unnecessary or duplicate cases.

Security scanning scripts and applications can have a major impact on Data Domain system performance.

This article explains how to troubleshoot Data Domain systems that fail to join Active Directory and return the generic "internal error" message.

Data Domain (DD) systems include an SNMP agent that can report system status and alerts to external management servers. If SNMP v2 is enabled and configured with default community names such as public or private, security scanners may flag the system as vulnerable to CVE‑1999‑0517.

This article describes a scenario in which an incorrect client ID was specified when configuring multifactor authentication.

After a System Controller Upgrade (headswap), Cloud Tier (CT) access may fail if the system passphrase on the new controller does not match the original passphrase. The Data Domain filesystem cannot decrypt the stored cloud profile, preventing connection to the Cloud Tier.

Avamar checkpoints may fail with the error “Data Domain did not respond to dd show-prop command” when SNMP services on the Data Domain system are disabled or not running. SNMP is required for Avamar to retrieve system properties from Data Domain.

This article describes how to find a list of Data Domain event codes.

This article provides information about different compression algorithms supported by Data Domain along with the impact of converting the system to use the LZ algorithm. Different compression algorithms have different characteristics, providing different compression efficiencies but also requiring different processing resources.

After deploying a new Data Domain Virtual Edition (DDVE) instance in Azure using OAuth authentication, the filesystem fails to start, and the object-store profile cannot be configured. This issue occurs due to token size limitations when using user-assigned managed identities.

Replication may post a warning when an unexpected segment is received. If replication can continue, it does so automatically.