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Article Number: 000203752

Data Domain: STORAGE-00009 | RAID Protection is in critical state - The system will shut down

Summary: If a Data Domain (DD) system has encountered multiple disk (2 or more) failures and resulting RAID reconstructions cannot proceed or fail to progress then as a matter of protection against data-loss, the system initiates a shut-down. ...

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Article Content

Symptoms

Affected Systems:
  • All DD systems
Alert Details and Symptoms: 
  • Event Code: STORAGE-00009
  • Event Summary:  
    Two or more disks are failed and the RAID protection is in critical state for over a considerable period of time. If an additional disk fails, there might be permanent loss of data. The system will shut down.
  • Multiple disk failure encountered (AND)
  • Any RAID6 disk group degraded by two disks (AND)
  • No spares available for reconstruction of failed disks (OR)
  • RAID reconstruction not progressing

Cause

Data Domain Operating System (DDOS) actively manages the underlying disks/storage (RAID). If a multiple disk failure has been encountered and the resulting RAID reconstructions cannot proceed (no SPAREs) or show no progress over a prolonged period of time, then as a means of protection against data-loss, the system will initiate a graceful shut down.

Resolution

To avoid running out of SPARE disks, ensure any single disk failures are addressed in a timely manner.
That is do not leave 'failed' disks accumulating in a system - get them replaced - the replaced disks become the required SPARES.
If multiple failed disks are encountered in a single event, please contact your DD Service/Support Provider.



Article Properties

Affected Product

Data Domain, Data Domain, PowerProtect Data Protection Hardware

Product

Data Domain Deduplication Storage Systems, Integrated Data Protection Appliance Family

Last Published Date

18 Jul 2023

Version

4

Article Type

Solution

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