Data Domain: Troubleshooting Disk Issues

Summary: This article provides links to some of the most referenced Dell Knowledge Base articles related to troubleshooting and diagnosing disk issues.

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List of the most popular Dell articles relating to Disks:

 

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ID | Link Title Summary Tag | Error Code
000043773 Failed, Absent, Unknown, or Powered-off Disk This article describes how to resolve the condition where a disk drive is in a failed, absent, or powered off state. DISK, STATUS, STATE, EVT-STORAGE-00001, EVT-STORAGE-00002, EVT-PHYM-00001
000052171 EVT-MPATH-00005: A single disk loses Multipath redundancy. EVT-MPATH-00005: The number of active paths to a disk has decreased. Multipath redundancy is lost unless there is more than one connection path. EVT-MPATH-00005, MPATH
 000203825  Disk has a hardware OR recoverable fault. DDVE-based platforms (e.g DD3300) will Alert to a failed, unknown, or predictive failure disk with the Event ID: STORAGE-00031 or STORAGE-00032. DISK, ALERT, EVENT, EVT-STORAGE-00031, EVT-STORAGE-00032
 000021916  Disk State Description Description of the various states a disk drive on a Data Domain system can be in and the significance of the state.  DISK, STATE
 000204252  Multiple drives fail during failover of HA systems  Highly-Available (HA) systems can experience drive failures during HA failover due to a known drive firmware issue. Some systems may experience the inability of the file system to startup after a failover or reboot.  DISK, HA, FAILOVER
 000037699  DD3300 Disk replacement procedure when a predictive drive failure occurs  This article describes how to replace a predictive failure disk on a Data Domain DD3300 appliance.  DISK, DD3300
 000203868 *  Alert: I/O module has failed. When an I/O Module (aka SLIC or PCI card) fails or is removed from a Data Domain (DD), the system generates the EventID: ENVIRONMENT-00029: Event Message: I/O module has failed.   DISK, EVT-ENVIRONMENT-00029
 000060053  DD3300 unknown disk with no alerts  An unknown disk or multiple unknown disks present at the DD3300 model. The system is not showing alerts.  DISK, UNKNOWN, DD3300
 000130388  PowerProtect and Data Domain Hardware Documents  General information for PowerProtect and Data Domain hardware  HW, DOCUMENTATION
 000204344  SAS or MPATH Alerts  All Data Domain (DD) systems have path redundancy (multipath) for attached enclosures and disks by SAS connectivity. If communication to any component on the SAS path is interrupted, then an appropriate alert notification is generated. DISK, STORAGE, SAS, ALERT, EVENT, EVT-MPATH-00003, EVT-MPATH-00005, EVT-MPATH-00006, EVT-SAS-03801, EVT-SAS-03802, EVT-SAS-03803
 000187052 How to add a disk enclosure or pack to the cloud metadata tier on a Physical DD.  EVT-SPACE-00004: Space usage in cloud metadata storage has exceeded the 90% threshold.  DISK, EVT-SPACE-00004, EVT-FMIG-00001, CLOUD
000179003 Understanding and Troubleshooting Hard Disk Drive or solid state drives on Dell Computers This article provides information about the different types of hard disk drives (HDD) or solid state drives (SSD) on Dell computers. Learn how to run the hard disk drive diagnostics, replace a hard drive, upgrade a hard drive, and more. Find links to troubleshooting resources to help resolve hard drive-related issues on a Dell computer. DISK, SSD
000043258 * Resolving Disk "Unknown" This article describes why a disk is reported as "unknown" and lists steps on how to resolve the condition. DISK, STATE
000203705 * Disk group missing or Storage unavailable The Data Domain Filesystem requires access to all its underlying storage always. The system alerts "Disk group missing" or "Storage unavailable" if any of the attached disk groups/LUN’s are not accessible. All disk groups should be accessible to the head unit always. DISK,, EVT-STORAGE-00006,EVT-FILESYS-00002
000068028 Space Usage in Data Collection Has Exceeded Threshold. Data Domain sends alerts that it is almost full (90-100%). This article helps to analyze the real cause, if there is any issue in deletion of files or the DD is filled up to its limit. DISK, CAPACITY, EVENT, EVT-SPACE-00004
000045148 * Proactive Drive Replacement Procedure (Reallocated Sectors) The Data Domain autosupport analytics team uses autosupport data from customer systems to identify disk drives that are at risk of failure and generates an alert. Proactive replacement of the disks with Reallocated Sectors incrementing within a given time frame helps prevent multiple disk failures that take the file system offline.  DISK, ASUP, EVT-ASUP_ANALYSIS-0004, SEAGATE, MOOSE
000031116 * Troubleshooting Alert: Enclosure disk only has one active connection path. This article describes how to resolve disk pathing alerts. These alerts apply to enclosures using multipath and indicate that a connection path to one or more disk drives in the enclosure failed.  DISK, SAS, MPATH, ALERT, EVENT, EVT-MPATH-00005
000061943 DD6300 may experience disk temperature warnings from the SSD installed in the PCI slots on the rear of the appliance. Disk (SSD) temperature warnings, from slots 1.13 and 1.14, may post and clear when the disk warms enough to enter the warning temperature threshold. SSD disks can safely operate to 60°C, and thus temperature warnings below the 60°C threshold can be safely ignored. TEMPERATURE
000043560 * Disk Drive Overheating This article addresses alerts relating to disk or enclosure temperatures. TEMPERATURE

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Affected Products

Data Domain
Article Properties
Article Number: 000223815
Article Type: How To
Last Modified: 22 Jul 2025
Version:  5
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