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## Display Status (`show-volumes` Command, OBP)

You can halt the system and use the show-volumes OBP command to determine if a drive has failed.

1. Halt the system and display the OBP `ok` prompt.

   See Display the `ok` Prompt.

2. Select the SAS controller device.

       ok select /pci@400/pci@2/pci@0/pci@e/scsi@0

   See Prepare to Use the `FCode` Utility for more information.

3. Type the `show-volumes` command to display the RAID volumes and their associated disks.

   In the following example, the secondary disk in a RAID 1 volume is offline.

       ok show-volumes
       Volume 0 Target 389   Type RAID1 (Mirroring)
         Name raid1test   WWID 04eec3557b137f31
         Degraded   Enabled
         2 Members                                          2048 Blocks, 1048 KB
         Disk 1
           Primary  Optimal
           Target c      HITACHI   H101414SCSUN146G SA25
         Disk 0
           Secondary  Offline  Out Of Sync
           Target 0      SEAGATE

4. Type the `unselect-dev` command to deselect the SAS controller device.

       ok unselect-dev

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