IBM RS/6000 44P - Manual (Page 142)

Note: Only resources that were previously detected by the diagnostics and have not
been deleted from the Diagnostic Test List are listed. If no resources are
available to be deleted, then none are listed.
Disk Maintenance
v Disk to Disk Copy
v Display/Alter Sector
Disk to Disk Copy
Notes:
1. This service aid cannot be used to update to a different size drive. The service aid
only supports copying from a SCSI drive to another SCSI drive of similar size.
2. Use the migratepv command when copying the contents to other disk drive types.
This command also works when copying SCSI disk drives or when copying to a
different size SCSI disk drive. Refer to
System Management Guide: Operating
System and Devices for a procedure on migrating the contents of a physical
volume.
This selection allows you to recover data from an old drive when replacing it with a new
drive. The service aid recovers all LVM (Logical Volume Manager) 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.
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 must
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 use the following steps
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.
To prevent problems that can occur when running this service aid from disk, it is
suggested that when possible this service aid be run from the diagnostics that are
loaded from removable media.
124 44P Series Model 170 User’s Guide