DD OS

This KB describe a symptom that DD PCR reports post-comp for a MTree that is larger than DD file system active tier size.

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.

This article provides a table of supported stream counts for Data Domain OS version 7.x by Data Domain System Model.

Data Domain Virtual Edition (DDVE) system upgrade fails with filesystem shutdown error.

Data Domain Enterprise Manager (DDEM) / System Manager graphical user interface (GUI) is not accessible after upgrading to DDOS 7.x

AWS is changing their server certificates from S3 to certificates issued by Amazon Trust Services CA. This change impacts Data Domain systems that are configured with Cloud Tier and Data Domain Virtual Edition (DDVE) deployed on AWS Cloud platform with Active Tier on Object Storage (ATOS).

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

Space usage alerts for root partition and /resource after upgrading to Data Domain Management Center (DDMC) 7.5 and later.

Determining the filesystem active tier cleaning schedule and setting the schedule using the data domain web console.

This article explains how to determine whether a "Power supply has failed" alert on a Data Domain Head Unit is valid or a false positive. It also provides steps to clear persistent indictments and verify Power Supply Unit (PSU) status.

Data Domain filesystem may panic during active tier GC copy forward phase on early DDOS 7.4.x versions.  This article explains the cause and resolution efforts.

Data Domain Operating System (DDOS) 7.x and later allows split and download of core files using DD System Manager.

This article provides information regarding the error "DD Retention Lock Compliance Mode is enabled on this system. License modification requires Security Officer credentials and can be performed only using the Command-Line Interface."

FastCopy behavior on Retention Locked MTree subdirectory in backups or Managed File Replication (MFR) causes 'filesys show compression' of '0' on Globally and Locally compressed row.

DD HA node rebooted after panic or issue; failover occurred but interconnect and veth alias interface did not come up on alternate node.

After replacing a cache‑tier SSD, the Data Domain File System (DDFS) may panic and cause the appliance to reboot because indexed cache entries become unreadable.

Considerations when doing a storage migration to 8TB packs with OP

Unable to SSO PowerProtect DD System Manager UI from Data Protection Central (DPC) Console Every time when tried to open the DD System Manager from DPC Console - "System Management," it gave the following Error "You do not have any roles assigned in DD System Manager. Contact your DD administrator."

This article is to help troubleshoot Common Internet File System (CIFS) restore issues.

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.

Guide to demonstrate the details needed to troubleshoot Fiber Channel connectivity from NetWorker clients.

Use mminfo to extract deduplication statistics for a NetWorker save set on a Data Domain; the output follows version:cloneid:backup:pre‑compression:post‑compression and shows deduplicate compression process.

This article intends to help users conduct a one-hop upgrade from DDOS 6.x to DDOS 7.x on Data Domain using special Minimally Disruptive Upgrade (MDU) RPMs.

This article outlines how to fix the issue and reenable the file system when the Data Domain File System (DDFS) panics with the following PANIC string: PANIC: ddr/dm/dmbt_iface.c: dmbt_update_entry_nolock

DDOS upgrade continuously reboots during the BIOS upgrade task. The iDRAC job queue shows the Firmware is updating the BIOS.

This article describes the procedure to configure SNMP for iDRAC on retention-lock compliance enabled Dell Data Domain systems.

Backups of large save sets intermittently fail when writing to Data Domain. The error observed is "5057-File handle is stale." This may be observed on various data types but is specific to large backups that span many hours.

This article provides an overview of the maximum number of interface groups (ifgroups) supported, and the maximum number of interfaces and clients supported in the ifgroups.

This article explains how to manage time synchronization on systems integrated with Active Directory (AD). It includes steps to verify time sync configuration, detect potential conflicts between Network Time Protocol (NTP) and AD time control. It also provides commands to disable Common Internet File System (CIFS) time sync and ensure proper time management. It also includes validation steps using logs and system status checks to ensure correct configuration.

How to setup Commvault with DD Retention Lock