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Local disks shown as missing and data in a 4 node Fabric MetroCluster

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Applies to

  • MetroCluster FC
  • ONTAP 9.5
  • Multiple Missing Disk

Issue

Communication issue after a power outage
  • Multiple local disk from different shelves went missing only on 1 node
  • Locally on the node the command  aggr status -f display's several disks as missing.

Example:

RAID Disk Device              HA  SHELF BAY  CHAN  Pool Type  RPM  Used (MB/blks)    Phys (MB/blks)
--------- ------------------- ---- ---- ---- ----- ---------- ----  -------------    ----------------
missing  clu01-sw01:8.126L113 2c    20  8    FC:A   0   SAS  10000 560000/1146880000 560208/1147307696
missing  clu01-sw01:8.126L115 2a    20  10   FC:A   0   SAS  10000 560000/1146880000 560208/1147307696
  • The command "aggr show" or "disk show" no errors are seen.
  • "sysconfig -r" display's several disks as missing and data
RAID Disk Device              HA  SHELF BAY  CHAN  Pool Type  RPM  Used (MB/blks)    Phys (MB/blks)
--------- ------------------ ---- ---- ---- ----- ---------- ----  -------------    ----------------
data  clu01-sw01:8.126L113    2c    20  8    FC:A   0   SAS  10000 560000/1146880000 560208/1147307696
data  clu01-sw01:8.126L115    2a    20  10   FC:A   0   SAS  10000 560000/1146880000 560208/1147307696
  • The disks are shown at the same time as missing and data or spare in 1 node and also as data or spare on the HA Partner
  • Disk replacement does not help
  • Power cycle of the disks does not help

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