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This option reads the data (recorded using the Save disk unit option) from the
removable medium and writes the data on the disk unit. The data can be
restored to a disk unit of the same type or to a different type of disk unit that
has the same or larger storage capacity. When all data is restored to the disk
unit, an ending display appears with status information. If the replaced disk is
load source, the system will IPL to DST from the new disk. For the others, the
system will not re-IPL.
For systems with multiple partitions, the partition configuration will have to be
restored first.
v Replace disk unit
This option is part of the disk unit recovery procedure. It allows you to
exchange a configured disk unit with a non-configured unit. Use the Delete ASP
data option to clear the system ASP before replacing the disk unit only if the
disk is not under mirror or device parity protection. You can make the
protection active again after replacing the failed disk by following the Disk Unit
Recovery Procedure.
v Assign missing units
This option reports any missing units (units that were part of the system during
the last IPL that have been disconnected accidentally or configured differently).
When you select to assign a unit, the system attempts to find one or more valid
non-configured disk units. If no valid non-configured disk units are found, use
the Replace disk unit function.
v Recover disk configuration
This option recovers the correct system configuration in cases where the load
source was damaged and the device configuration table on the installation
device was lost.
v Disk unit problem recovery procedures
For details on this option, see the main heading “Disk unit problem recovery
procedures” on page 22.
v Suspend mirrored protection
Select this option when you want to stop mirrored protection for a unit in a
mirrored auxiliary storage pool.
v Resume mirrored protection
Select this option when you want to restart mirrored protection for a unit in a
mirrored auxiliary storage pool.
v Copy disk unit data
This option allows you to copy all the data from a configured disk to a
non-configured disk unit. This action can take the place of save disk unit data to
tape and a restore disk unit data. After the operation is complete, the target disk
unit (the one copied to) takes the place of the original disk unit in the system
configuration. The original disk cannot be used in the system configuration
without data loss.
v Delete disk unit data
This option allows you to delete all the data from a non-configured disk unit.
Note: This option is only allowed for non-configured disk units.
v Upgrade load-source utility
This option allows you to migrate the disk unit configuration to a system with
new hardware.
v Rebuild disk unit data
Chapter 1. Dedicated Service Tools (DST) 21