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    • False entry in the E-series Recovery GURU for 'Cache Backup Device Failed' after controller replacement
      https://kb.netapp.com/on-prem/E-Series/Management-Apps-KBs/False_stale_entry_in_Recovery_GURU_Cache_Backup_Device_Failed
      Applies to E-Series SANtricity Management Software E-Series System Manager
    • E-Series controller panic due to cacheRecover - addToCache
      https://kb.netapp.com/on-prem/E-Series/SANtricity-OS-KBs/E-Series_controller_panic_due_to_cacheRecover_-_addToCache
      Applies to NetApp StorageGRID NetApp E-Series Systems SANtricity OS 11.70.5P1 Issue E-Series controller in lockdown state with 7-segment code: OE LF dr E-Series controller reboots with panic string: P...Applies to NetApp StorageGRID NetApp E-Series Systems SANtricity OS 11.70.5P1 Issue E-Series controller in lockdown state with 7-segment code: OE LF dr E-Series controller reboots with panic string: PANIC: cacheRecover - addToCache(1658ab600) returned 1657b3980 Alternate controller will be inaccessible and/or boot-loop while the affected controller is in the system
    • E-Series Persistent cache backup device has failed - AutoSupport Message
      https://kb.netapp.com/on-prem/E-Series/Hardware-KBs/E-Series_Persistent_cache_backup_device_has_failed_-_AutoSupport_Message
      E-Series: RecoveryGURU reports CACHE_BACKUP_DEVICE_FAILED-Recovery Failure Type Code: 251. This is caused when the cache backup device in a controller is failed.
    • E-series persistent cache backup device at end of life
      https://kb.netapp.com/on-prem/E-Series/Hardware-KBs/E-series_persistent_cache_backup_device_at_end_of_life
      E-Series SANtricity Storage Manager home page reports recovery failure entry: CACHE_BACKUP_DEVICE_AT_END_OF_LIFE. This KB provides the cause and solution for this issue.