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Disk Based Diagnostic Update Service Aid and Update Disk
Based Diagnostic Task
This service aid allows fixes (APARs) to be applied.
Disk Based Diagnostic Update Service Aid Before Version 4.2
Prior to version 4.2 this service aid is used to update the diagnostics on the disk drive. The
updates may be new diagnostics or an update to the existing diagnostics. It uses the
installp command to do this.
Update Disk Based Diagnostic Task Version 4.2
Beginning with version 4.2 this service aid is replaced by the Update Disk Based
Diagnostics task. The task invokes the smit Update Software by Fix (APAR) task. The task
allows the input device and APARs to be selected. Any APAR can be installed using this
task. Additional information is documented under smit.
Disk Maintenance Service Aid
This service aid consist of the following:
Disk to Disk Copy Service Aid
Display/Alter Sector Service Aid
Disk to Disk Copy Service Aid
Note: To access this service aid refer to the Disk Maintenance Service Aid.
The service aid allows you to recover data from an old drive when replacing it with a new
drive. The service aid only supports copying from a drive to another drive of similar size.
This service aid cannot be used to update to a different size drive. The migratepv
command should be used when updating drives. The service aid recovers all LVM software
reassigned blocks. To prevent corrupted data from being copied to the new drive, the
service aid aborts if an unrecoverable read error is detected. To help prevent possible
problems with the new drive, the service aid aborts if the number of bad blocks being
reassigned reaches a threshold.
The procedure for using this service aid requires that both the old and new disks be installed
in or attached to the system with unique SCSI addresses. This requires that the new disk
drive SCSI address must be set to an address that is not currently in use and the drive be
installed in an empty location. If there are no empty locations, then one of the other drives
has to be removed. Once the copy is complete, only one drive may remain installed. Either
remove the target drive to return to the original configuration, or perform the following
procedure to complete the replacement of the old drive with the new drive.
1. Remove both drives.
2. Set the SCSI address of the new drive to the SCSI address of the old drive.
3. Install the new drive in the old drive's location.
4. Install any other drives that were removed into their original location.
6-6
Operator Guide
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