Reserve storage pools are groups of volumes that have been formatted for future use. Reserve storage pools can make it easier for you to manage your defined but unused volumes. You give each reserve storage pool a name. You can have any number of reserve storage pools.
Using reserve storage pools can make it easier to manage your defined but unused volumes.
To belong to a reserve storage pool, a volume must have been initialized as reserved and have an owner ID beginning with IBMRSP followed by the name of a reserve storage pool. It then has a volume serial number but cannot be brought online. It remains offline until it is re-initialized as a non-reserved volume.