Viewing the disk array configuration

Use this procedure to view SAS disk array configurations on your server.

To view the configuration of arrays and disks associated with a particular controller, do the following:

Start the Disk Array Manager by following the steps in Using the Disk Array Manager.
Select List IBM SAS Disk Array Configuration.
Choose one or more controllers.

The output displayed will be similar to the following:

+--------------------------------------------------------------------------------+ 
|                                                                                | 
|                                 COMMAND STATUS                                 |  
|                                                                                |  
|Command: OK            stdout: yes           stderr: no                         |  
|                                                                                |  
|Before command completion, additional instructions might appear below.            |  
|                                                                                |  
|------------------------------------------------------------------------        |  
|Name      Resource  State       Description              Size                   |  
|------------------------------------------------------------------------        |  
|sissas0   FFFFFFFF  Primary     PCI-X266 Planar 3 Gb SAS RAID Adapter            |  
|                                                                                |  
|hdisk7    00FF0000  Optimal     RAID 5 Array            69.7GB                  |  
| pdisk1   00040200  Active      Array Member            34.8GB                  |  
| pdisk3   00040900  Active      Array Member            34.8GB                  |  
| pdisk4   00040000  Active      Array Member            34.8GB                  |  
|                                                                                |  
|hdisk8    00FF0100  Rebuilding  RAID 6 Array            69.7GB Rebuild 13%      |  
| pdisk2   00040800  Active      Array Member            34.8GB                  |  
| pdisk7   00040B00  Active      Array Member            34.8GB                  |  
| pdisk9   00000A00  Active      Array Member            34.8GB                  |  
| pdisk11  00000900  Active      Array Member            34.8GB                  |  
|                                                                                |  
|hdisk12   00FF0200  Optimal     RAID 0 Array            34.8GB                  |  
| pdisk5   00040300  Active      Array Member            34.8GB                  |  
|                                                                                |  
|hdisk4    00FF0400  Rebuilding  RAID 10 Array           69.7GB Create 8%        |  
| pdisk0   00040100  Active      Array Member            69.7GB                  |  
| pdisk6   00040400  Active      Array Member            69.7GB                  |  
|                                                                                |  
|*unknwn*  00000500  Active      Array Candidate            N/A                  |  
|pdisk19   00060A00  Failed      Array Candidate         34.8GB                  |  
|pdisk10   00000B00  Active      Array Candidate         34.8GB Zeroed           |  
|pdisk17   00000800  RWProtected Array Candidate         69.7GB Format 8%        |  
|pdisk18   00000400  Active      Array Candidate         69.7GB Zeroed           |  
|pdisk16   00000600  RWProtected Array Candidate         69.7GB Format 7%        |  
|                                                                                |  
|hdisk0    00040500  Available   SAS Disk Drive         146.8GB                  |  
|hdisk1    00040700  Available   SAS Disk Drive         146.8GB                  |  
|hdisk2    00040600  Available   SAS Disk Drive         146.8GB                  |  
|                                                                                |  
|F1=Help             F2=Refresh          F3=Cancel           F6=Command          |  
|F8=Image            F9=Shell            F10=Exit            /=Find              |  
|n=Find Next                                                                     |  
+--------------------------------------------------------------------------------+

The controller's name, location, status, and description are displayed first. Each IBM® SAS disk array hdisk is displayed with its Array Member pdisks directly underneath it.

The first column of output is the name of the disk array (hdisk) or physical disk (pdisk). Note the use of *unknwn* to identify a device known by the controller but not configured in AIX®.
The second column of output is the device's resource location (or simply “Resource”). This value might also be referred to as the device's SCSI ID in other parts of AIX software documentation. For more information on the format of the resource value, see SAS resource locations.
The third column of the preceding screen is the state of the disk array or pdisk. For information about the possible disk array and pdisk states, see Disk arrays. For 512 byte/sector standalone disks (hdisks), this column is the AIX device state (for example, Available or Defined).
The fourth column is a description of the device. For a disk array, the description is the RAID level of the array. For a pdisk, the description can be Array Candidate, Hot Spare, or Array Member.
The fifth column is the capacity of the array or disk. For information about how the capacity of an array is calculated for each RAID level, see Disk array capacities.
The sixth column is the status of a long-running command issued to a disk array or pdisk. This column is also used to indicate that an Array Candidate pdisk has had its data zeroed. If there is a long-running command in progress, the percentage complete will be displayed after the command. The following values might be displayed (where nn% is the command percentage complete):
Create nn%

Disk array is in process of being created.

Delete nn%

Disk array is in process of being deleted.

Rebuild nn%

Disk array is in process of being reconstructed.

Resync nn%

Disk array is in process of having it parity data resynchronized.

Adding nn%

Disk array is in process of having one or more disks added to it.

Format nn%

pdisk is in process of being formatted.

Zeroed

pdisk has been zeroed.

Array Candidate pdisks and Hot Spare pdisks are displayed at the bottom of this screen. The pdisk names are displayed, along with location, state, description, capacity, and long-running command status. Any 512 bytes per sector stand-alone disks (hdisks) are displayed, along with location, state, description, and capacity.