DD OS

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.

Data Domain Capacity Resolution Path.

Network Adapters with RDMA enabled that are installed outside of Slot 7 are causing issues during HA Mirroring Checks for NVRAM status. This is causing HA status to report as degraded with "NVRAM not ok" even though NVRAM is healthy.

Editing a Data Domain in Avamar fails with errors such as "Imported host certificate already exists for application(s): ddboost" because legacy certificate files remain in the ddboost certificate directory, causing the import process to abort.

Avamar is unable to remove the imported-ca for login-auth during certificate renewal due to changes in certificate ownership within the Data Domain. This can cause failure within GOAV when sync'ing updated certificates to Data Domain

This article provides instructions for performing a flea drain (legacy BMC reset) on Dell PowerEdge-based PowerProtect Data Domain appliances. This procedure can help resolve various system issues without requiring physical intervention.

HA pair with Retention Lock Compliance Enabled shows degraded status with SMS mirroring failing; logs contain iDRAC HTTP 500 “Failed to fetch iDRAC users, unable to update privilege”. The cause is an iDRAC stability issue that prevents user enumeration, leading HA to mark SMS as failed.

Following a DD OS upgrade and reboot, certain network interfaces may not initialize successfully, resulting in missing routing rules and network connectivity issues. This behavior has been observed on systems using Intel E810 network adapters with Direct Attach (DA) cables and is resolved in DD OS 8.3.1.40 and later releases.

Both Data Domain (DD) (physical and virtual) and PowerProtect DD Management Center (DDMC) installs come with a REST service embedded. Customers may use it to build their own applications to interact with the DDs and DDMCs.

This article describes a condition where the Data Domain filesystem fails to start due to a potential Non-Volatile Random Access Memory (NVRAM) mismatch. It also provides a validated workaround to restore filesystem availability.

After upgrading to DDOS 8.5 or later, SupportAssist configuration may fail with the error "Unable to load JSON parser".

The primary focus for this article is to troubleshoot an interface down, multiple interfaces down, an intermittent interface, and a bad network card. Replacing parts should be the last step in resolving interface down issues. Troubleshooting these issues first such as reviewing the switch side, may lead to the quickest resolution.

Data Domain system gives a pre-check alert for licenses going deprecated.

STIG Compliance – STIG Requirement SV-279028r1138077: This requirement states that information transfer mechanisms must uniquely identify and authenticate source systems before permitting data access. To align with this requirement, DD Boost global-authentication-mode and global-encryption-strength should not be configured as none. Configure DD Boost to use two-way or two-way-password authentication and medium or high encryption strength, and verify that connected DD Boost clients such as PPDM support the selected settings.

A BoostFS mount operation may create the /tmp/Boost_D4_Event.log file due to initialization of integrated DDBoost D4 libraries. On affected releases, the file may be created with world-writable permissions; this behavior has been corrected in later BoostFS releases that apply more restrictive permissions and automatically update existing files during installation or upgrade.

This article expands on Active Directory integration for Dell Data Domain systems by providing commonly used CLI commands for domain joins, OU placement, authentication configuration, domain verification, access management, CIFS share considerations, and advanced troubleshooting. It serves as a command-reference companion to the primary Active Directory guide and includes examples and best practices for validating and maintaining Active Directory connectivity.

Network interfaces may go down, become intermittent, or fail to recover properly following events such as node reboots, HA failovers, link renegotiation, or other network transitions on systems equipped with Intel NICs. This issue can occur when the Intel workaround for M14MK dual-rate transceivers remains configured after the interfaces have been migrated to W4GPP 25Gb transceivers. The resulting speed mismatch can cause interface connectivity loss and intermittent network behavior.

This article provides a structured troubleshooting workflow, event-specific remediation guidance, and the most likely resolution for SDPM (NVRAM) events.

This article describes how to sanitize and reconfigure Software Defined Persistent Memory (SDPM) settings in the BIOS and verify successful initialization after the system returns to DDOS.

If the license is in the old format when upgrading a Data Domain controller to a new model, it fails on newer DDOS codes.

MTree replication resync can fail with error "MREPL ASSOC failed: Dest MTree is WORM, source requests removal of WORM (5312)" when the source and destination MTrees have mismatched Retention Lock states. Resync operations are only supported when both MTrees have matching Data Domain Retention Lock Governance or Compliance settings.

Step-by-Step Instructions on how to download a Data Domain Operating System (DDOS) Upgrade Release Package Manager (RPM), upload it to the server, and verify it was a successful download, before a planned DDOS upgrade with Remote Proactive.

This KB article outlines comprehensive guidelines for preparing a Data Domain High Availability (DDHA) system upgrade. Adhering to these instructions guarantees a successful upgrade experience.

Attempting to add a second disk pack to the active tier returns an error stating a partial shelf must be fully used first. The failure is caused by an insufficient capacity license that leaves the initial shelf only partially consumed.

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

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 Dell Data Domain DD6400/6410 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.

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).

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.

Summary: DDOS precheck fails because of an old certificate in the trust chain.