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E-Series controller gets offline due to DA mismatch on cache by requests to NVMe volumes

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Applies to

  • E-Series systems EF300, EF600
  • SANtricity OS 11.90R2 or earlier
  • Data Assurance (DA)
  • NVMe (Non-Volatile Memory Express)
  • NVMe Deallocated or Unwritten Logical Block Error Enable (DULBE)
  • Write Caching is enabled for the volume

Issue

  • E-Series controller gets offline after detecting multiple events showing DA mismatch on the cached data for NVMe volumes

Event type: 2061
Event category: Error
Priority: Informational
Description: Data assurance mismatch detected - probable cause is cached data
Event specific codes: 0/0/0
Component type: Volume
Component location: Volume <VOLUME>
Logged by: Controller in bay <A/B>

  • E-Series Notification (Loss of host-side connection redundancy detected) CRITICAL is triggered

 

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