Node reboots every 24 hours due to a degraded aggregate

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Visibility:: Public

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Category:: ontap-9

Specialty:: CORE

Last Updated:

Applies to

ONTAP 9
FAS/AFF

Issue

Node reboots every 24 hours due to two broken disks in raid_dp group
Event logs shows similar messages:

Jun 21 12:51:01 [VDF_SM2_CDOT2-2-02:monitor.raid.brokenDisk:error]: data disk,dparity disk in RAID group
"/aggr0/plex0/rg0" are broken.
Jun 21 12:51:01 [VDF_SM2_CDOT2-2-02:monitor.brokenDisk.notice:notice]: When two disks are broken in raid_dp volume,
the system shuts down automatically every 24 hours to encourage you to replace the disk.
If you reboot the system, it will run for another 24 hours before shutting down.

Aggregate reported shows a RAID group in a double degraded state:

Aggregate aggr0 (restricted, raid_dp, degraded) (block checksums)
  Plex /aggr0/plex0 (online, normal, active, pool1)
    RAID group /aggr0/plex0/rg0 (double degraded, block checksums)

 

      RAID Disk Device          HA  SHELF BAY CHAN Pool Type  RPM  Used (MB/blks)    Phys (MB/blks)
      --------- ------          ------------- ---- ---- ---- ----- --------------    --------------
      dparity   FAILED                  N/A                    9324290/ -
      parity    0m.i1.0L82      0m    12  21         1  FSAS  7200 9324290/19096145920 9342976/19134414848
      data      FAILED                  N/A                        9324290/ -

Reported aggregate is not created/used by customer; no data on it
Aggregate is visible only from nodeshell