Data Domain

Data Domain systems initiate a graceful shutdown if multiple disk failures occur and RAID reconstruction cannot proceed. This protective measure prevents potential data loss when RAID protection reaches a critical state.

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.

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

A Data Domain (DD) system generates alert EVT-ENVIRONMENT-00029 with the message "I/O module has failed" when a PCIe I/O module (also known as a SLIC or PCI card) fails or is removed. Affected card types include SAS, NIC, NVRAM, and Fibre Channel (FC).

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 step-by-step instructions for changing the Fully Qualified Domain Name (FQDN) of a Data Domain system. This process is typically required when an organization undergoes a domain name change due to a merger, acquisition, or rebranding initiative. You can use this procedure to solely change the domain name if needed. If performing this change for a HA Data Domain Set-up, Follow the steps on the Active node only, as they sync to the passive node.

Migration send may fail with active critical alerts when the destination hostname specified in the migration command does not match the destination hostname defined in the replication context. Ensure the hostname used in the migration send command matches the destination system hostname configured in the replication context.

A bonded interface speed mismatch alert may occur when one member interface negotiates at a lower speed than the other member interfaces in the bond, causing the alert to remain active until all interfaces operate at the same speed.

A VLAN interface became inaccessible after a reboot because an invalid MTU configuration was rejected during initial configuration but was still persisted in the registry, causing the interface to fail when the system later attempted to apply the invalid MTU during interface initialization.

A TX timeout triggered the QLogic auto-recovery mechanism, which reset the interface from the configured MTU of 9000 to the default MTU of 1500; if the issue reoccurs, we can either manually restore the MTU or keep the interface configured with the default value.

This article discusses the difference between "Server Utilization" and physical space consumption on data nodes and why these do not correlate.

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.

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

Ephemeral UDP port range usage

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

This article details how to add an upgrade order to your existing Data Domain license.

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

A Dell Data Domain DD6400 system may intermittently generate false "EVT-STORAGE-00039: RAID reconstruction is in progress" alerts even though no disk failures, disk errors, or active RAID rebuilds exist.

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

Steps to upgrade Intel x550 NIC card firmware from version 18.8.9 to 19.5.12 required to upgrade to DDOS 7.2.0.120.

Replacing, reimaging, or changing credentials on a Data Domain causes PowerProtect Data Manager agent backups to fail. Errors such as ABA0002, ABA0008, ABF0005, ABG0004, or PKIX (Public-Key Infrastructure (X.509)) path building failed due to stale credentials, mismatched storage units, and certificate validation issues.

Renamed or deleted PowerScale shares are still visible within the PowerProtect Data Manager user interface.

FLR fails saying that it is not available for datastores () using transport mode 'Hotadd'

This KB describes how to restart (IPL) an IOP on an IBM System i.

This article describes how to identify and resolve memory-related errors on Dell Data Domain systems.

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.

This guide details compatibility of MTree, Managed File, directory, collection, and delta replication across Data Domain Operating System (DDOS) version families, with notes on limitations.

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.

This article outlines how to identify and resolve Power Supply Unit (PSU) alerts on Data Domain systems. It explains PSU status indicators, verification methods using CLI and UI, and recommended troubleshooting steps.

Data Domain may show amber LED and Power Supply Unit (PSU) alert EVT‑ENVIRONMENT‑00026 after an Uninterruptible Power Supply (UPS) Power Distribution Unit (PDU) replacement or power‑maintenance. Cached indictments and iDRAC log cause this, not hardware failure.