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 |
|sissas1 FEFFFFFF HA Linked Remote adapter SN 0001G055 |
| |
|hdisk7 00FF0000 Optimal RAID 5 Array (N/N) 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 (0/N) 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 (0/0) 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. If the array has HA access optimization configured, an identifier for the current optimization followed by preferred optimization will be shown in parentheses after the raid level, see HA access characteristics within List SAS Disk Array Configuration. 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.
