HP XP P9000 Command View Advanced Edition Software - Manual (Page 39)

be reused. If you use the server properties, you can specify how many volumes appear as migration
target candidates.
• When you create a tier, you specify resource conditions. A tier that has been created by specifying
the following attributes cannot be selected as a migration target:
• If you specified one of the following attributes for volumes:
- Storage type
- Port
- Host group
• If you specified one of the following attributes for THP pools:
- Storage type
- Drive type
- Drive speed (RPM)
- RAID level
- Storage system
• After migrating, you can delete the source volumes.
• After volumes are migrated to a THP pool, unused capacity in the target volumes is returned to
the pool.
• You cannot work with volumes until the migration tasks are completed.
You must have a HP StorageWorks P9000 Tiered Storage Manager software license registered to
perform Volume Migration.
Prerequisites for migrating volumes
Before migrating volumes, verify the following:
• An HP StorageWorks P9000 Tiered Storage Manager software license is registered.
• You have Tiered Storage Manager Modify permission.
• A tier has been created.
• You know which volumes to migrate and which storage systems they belong to.
• The emulation type, number of blocks, and size are the same for the source and target migration
volumes.
• You can access the volumes and they are not reserved by other programs or tasks.
• Nothing appears under Migration Restrictions in the volume information area. If (target) is
displayed at the end of the name, then the volume can be used as a source.
LUSE volume conditions
If the source volume is LUSE volume:
• Target volumes must be either all internal or all external volumes.
• The LUSE volume can be migrated only if the target volume is not a THP volume.
• The emulation type, drive type, I/O suppression mode, cache mode, and CLPR of all migration
target volumes must be the same.
• For the Tiered Storage Manager to automatically determine migration target volumes, external
migration target volumes require that all of the volumes must be in the same external storage system
and the RAID level and SLPR (storage management logical partition) of all migration target volumes
be the same.
User Guide 39