Displaying device parity status

Use these steps to display device parity status.

From the System Service Tools (SST) menu, follow these steps:
1. Select option 3 (Work with disk units).
2. Select option 1 (Display disk configuration) on the Work with Disk Units display.
or from the Use Dedicated Service Tools (DST) menu, follow these steps:
1. Select option 4 (Work with disk units).
2. Select option 1 (Work with disk configuration) on the Work with Disk Units display.
3. Select option 1 (Display disk configuration) on the Work with Disk Configuration display.
4. Select option 1 (Display disk configuration status) on the Display Disk Configuration display.
The Display Disk Configuration menu appears.
Select option 5 (Display device parity status) on the Display Disk Configuration display and press the Enter key.
The Display Device Parity Status display appears:
```
                       Display Device Parity Status

Parity                                Resource               Hot Spare
  Set    ASP   Unit   Type    Model   Name       Status     Protection
      1               571E    001      DC11       RAID 5          N  
         *     *      6717    078     DD0020     Active               
         *     *      6717    078     DD0027     Active               
         *     *      6717    078     DD0034     Active        
         *     *      6717    078     DD0051     Active    
      2               571E    001     DC12        RAID 6           N   
         *     *      4327    099     DD0060     Active     
         *     *      4327    099     DD0057     Active    
         *     *      4327    099     DD0134     Active   
         *     *      4327    099     DD0228     Active 
```
The display is organized by device parity set. It includes controllers that can support device parity protection and all of the disk units that have the hardware capability for device parity protection. The possible values for the Status column are as follows:

Active

This unit is part of a disk unit subsystem that has device parity protection. This unit is fully operational.

Failed

This unit is part of a disk unit subsystem that has device parity protection. This unit has failed. If another unit in the disk unit subsystem fails, data could be lost.

% Rebuilt

This unit is part of a disk unit subsystem that has device parity protection. The data on this unit is being rebuilt from other units in the disk unit subsystem.

Unprotected

This unit is part of a disk unit subsystem that has device parity protection. This unit is operational. However, another unit in the disk unit subsystem has failed or is being rebuilt. If another unit in the disk unit subsystem fails, data might be lost.

% Resyncing

The parity for the parity set is being built from the data within the disk unit subsystem.