Data Domain

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.

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

Target Stack listing is no longer available on the dell.com website.

Failover bonding on Data Domain relies on link state. If a NIC fails without link change, failover will not occur, causing possible connectivity loss if no alternate interface exists.

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.

Encryption key management using KeySecure configuration is not completed, with errors such as "Failed to synchronize keys."

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.

Filesystem encountered an error and restarted with error "Failed to restore seeding resume context" in the logs.

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.

This article lists steps on how to manage usernames and passwords on a Data Domain. If the incorrect account and password is used, access to the Data Domain may be limited, shares may not be accessible, or media sets reported offline.

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."

This article consists of an overview of Data Domain retention lock (RL) functionality and explains the differences between configuration and utilization of governance and compliance mode.

How to reset the iDRAC Password and Configuration on relevant Data Domain systems.

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

Data Domain systems automatically protect stability and recover from rare Fibre Channel (FC) anomalies. When unexpected conditions occur, the system may generate an automatic firmware dump on an FC target port. This alert (FCSSM‑00003) confirms the event occurred and was safely handled by the system. In most cases, this is a temporary condition and not a hardware failure.

If a Fibre Channel (FC) target port experiences repeated firmware dump events, the system may proactively disable the port to prevent ongoing disruption. Alert FCSSM‑00004 indicates this protective action has occurred. This behavior is intentional and protects overall system health.

Instant Access or File Level Restore (FLR) Network File System (NFS) datastore is mounted in VMware from Data Domain despite no ongoing IA/FLR.

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.

To provide the detailed usage for the DD Boost connectivity checking tool (ddpconnchk) by using the exact same values from the Backup Application.

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