Restoring a unit

In the mirrored environment, the system allows you to restore data to storage units.

The following rules apply to restoring units on a system with mirrored protection:

• The restore is possible only for an active device.
• This option can restore to either a configured or nonconfigured disk unit.
• The restore operation requires that the unit restored to is as large as or larger than the unit saved.
• The restore operation is not permitted if the state of a unit is unknown. You can restore unit 1 only to the initial program load (IPL) device.
• After a unit is restored, the system performs an IPL to dedicated service tools (DST).
• The unit being restored must satisfy all mirrored protection configuration rules and restrictions.