Before you schedule a time to install the new release, determine the available storage space and the storage space that is required.
Load-source disk unit requirements: V5R4 Licensed Internal Code requires that you have a load-source disk unit of 17 GB or larger for each server or logical partition.
For information on upgrading the load-source disk unit with device parity protection, see Checklist 11: Upgrade load-source disk unit with device parity protection . Otherwise contact your authorized service provider for assistance.