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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.
Updated: May 15, 2026
ID: 000203752
This health check tool is designed to triage common and performance issues reported for DDVE system.
Updated: May 14, 2026
ID: 000200529
This article describes a known issue where Data Domain systems generate a recurring SupportAssist alert indicating a communication failure with the Secure Remote Services gateway. An internal software defect causes this issue and requires either an upgrade or Dell Technical Support for resolution.
Updated: May 15, 2026
ID: 000465220
The Data Domain Operating System (DDOS) continuously monitors disk health. When multiple disks within the same disk group report read errors over a one-hour period, DDOS triggers alert STORAGE-00017 and initiates copy reconstructions to protect data integrity.
Updated: May 15, 2026
ID: 000203829
On DD3300 and DP4400, disks flagged by the PowerEdge RAID Controller or iDRAC generate EVT‑STORAGE‑00031 (hardware fault) or EVT‑STORAGE‑00032 (recoverable predictive failure) alerts.
Updated: May 15, 2026
ID: 000203825
When upgrading to DDOS 7.6, 7.7 or later releases, in some situations the upgrade may take longer to complete and appear to be stuck at the "phase 4/4 (Finalize 51%)" point.
Updated: May 15, 2026
ID: 000203823
DDOS keeps free space in the DD FS and in the system partitions tightly monitored, so that it alerts the administrator when capacity is about to run out for either the customer data storage or any of the system partitions.
Updated: May 15, 2026
ID: 000203515
This KB describes how to restart (IPL) an IOP on an IBM System i.
Updated: May 15, 2026
ID: 000452931
If the 'Use certificate authentication for REST communication' checkbox is selected, a Data Domain cannot be edited from the Avamar AUI.
Updated: May 15, 2026
ID: 000203336
Data Domain systems may report a nonspecific blocking issue when running a DDOS upgrade precheck. This may be due to a DD Cleaning Cycle running then.
Updated: May 15, 2026
ID: 000203155
In Retention Lock Compliance (RLC) enabled DDs where keeping the proper date and time is critical for the security of data, time changes or gaps are accounted for, and in certain situations cumulative time changes exceed a given threshold, hence an alert gets raised.
Updated: May 15, 2026
ID: 000202756
Data Domain and Data Domain Management Center devices allow for remote access through SSH. Also, if enabled, allow bi-directional file transfers using SSH-based SCP protocol. However, WinSCP does not work even if SCP support is enabled in the Data Domain or Data Domain Management Center.
Updated: May 15, 2026
ID: 000202391
Prediction Enabled Automatic Cleaning is run only when its prediction engine determines whether used capacity exceeds a configured percentage within a configured time.
Updated: May 14, 2026
ID: 000199927
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.
Updated: May 14, 2026
ID: 000198864
PowerProtect DP Series: Protection Storage or Data Domain: Security Officer Account Resolution Path
Updated: May 14, 2026
ID: 000198715
Message "Alert: Security officer user account must be created." received after upgrading IDPA to version 2.7.
Updated: May 13, 2026
ID: 000198128
This article serves as an overview of SOL and what settings are required for each system.
Updated: May 13, 2026
ID: 000197824
Summary: This document details the steps to register/add a Data Domain System to Secure Connect Gateway.
Updated: May 13, 2026
ID: 000197719
Data Domain showing red in the Avamar user interface and or AUI are caused by a few different issues. This is a resolution path that points you toward existing KB articles for these topics.
Updated: May 13, 2026
ID: 000197106
When vault Data Domain fills up, symptoms include high capacity usage, poor deduplication, and expiration failures. The root cause is inadequate capacity planning, improper backup configuration, and unchecked saveset accumulation across DD, Networker, Avamar, and Cyber Recovery.
Updated: May 13, 2026
ID: 000464399
This article describes a known limitation where a Data Domain system fails to join an Active Directory (AD) domain if the AD join account password contains multi-byte characters. A workaround is provided.
Updated: May 13, 2026
ID: 000028763
File systems created before DDOS 7.5.x may panic after upgrading to DDOS 7.10.x or later if mtree replication is configured. The panic message is "ddr/dm/dmbt_iface.c: dmbt_get_entry_inode: 19746: !(ret == DD_ERR_NONE)."
Updated: May 13, 2026
ID: 000215835
How to perform Oracle restore on RMAN Agent using ddutil utility
Updated: May 13, 2026
ID: 000196147
This article describes a condition where the Data Domain Virtual Edition (DDVE) 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.
Updated: May 12, 2026
ID: 000464031
Dell EMC Data Domain workaround and mitigation is available before remediation for the Apache Log4j Remote Code Execution Vulnerability that may be exploited by malicious users to compromise the affected system. Dell recommends implementing this remediation as soon as possible in light of the critical severity of the vulnerability.
Updated: May 12, 2026
ID: 000194503
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.
Updated: May 12, 2026
ID: 000081247
Data Domain Capacity Resolution Path.
Updated: May 12, 2026
ID: 000192662
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.
Updated: May 12, 2026
ID: 000192895
This article describes how to migrate AWS Elastic Block Store (EBS) volume from gp2 to gp3 type for Data Domain Virtual Edition (DDVE) appliance deployed in AWS cloud platform.
Updated: May 12, 2026
ID: 000192086
Directly attaching failover interfaces back-to-back between two DDR may fail to be able to transfer data.
Updated: May 11, 2026
ID: 000191681