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Determine drive and RAID group information for a local tier in ONTAP

Contributors netapp-thomi netapp-lenida netapp-aherbin
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Some local tier administration tasks require that you know what types of drives compose the local tier, their size, checksum, and status, whether they are shared with other local tiers, and the size and composition of the RAID groups.

Step

  1. Show the drives for the local tier, by RAID group:

    storage aggregate show-status aggr_name

    The drives are displayed for each RAID group in the local tier.

    You can see the RAID type of the drive (data, parity, dparity) in the Position column. If the Position column displays shared, then the drive is shared: if it is an HDD, it is a partitioned disk; if it is an SSD, it is part of a storage pool.

Example: A Flash Pool local tier using an SSD storage pool and data partitions
cluster1::> storage aggregate show-status nodeA_fp_1

Owner Node: cluster1-a
 Aggregate: nodeA_fp_1 (online, mixed_raid_type, hybrid) (block checksums)
  Plex: /nodeA_fp_1/plex0 (online, normal, active, pool0)
   RAID Group /nodeA_fp_1/plex0/rg0 (normal, block checksums, raid_dp)

                                             Usable Physical
     Position Disk       Pool Type     RPM     Size     Size Status
     -------- ---------- ---- ----- ------ -------- -------- -------
     shared   2.0.1       0   SAS    10000  472.9GB  547.1GB (normal)
     shared   2.0.3       0   SAS    10000  472.9GB  547.1GB (normal)
     shared   2.0.5       0   SAS    10000  472.9GB  547.1GB (normal)
     shared   2.0.7       0   SAS    10000  472.9GB  547.1GB (normal)
     shared   2.0.9       0   SAS    10000  472.9GB  547.1GB (normal)
     shared   2.0.11      0   SAS    10000  472.9GB  547.1GB (normal)

   RAID Group /nodeA_flashpool_1/plex0/rg1
   (normal, block checksums, raid4) (Storage Pool: SmallSP)

                                             Usable Physical
     Position Disk       Pool Type     RPM     Size     Size Status
     -------- ---------- ---- ----- ------ -------- -------- -------
     shared   2.0.13      0   SSD        -  186.2GB  745.2GB (normal)
     shared   2.0.12      0   SSD        -  186.2GB  745.2GB (normal)

8 entries were displayed.