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accessed from the HPSS Health and Status window's Configure menu, submenu Storage Space, item
Heirarchies. Refer to Section 3.9.3: HPSS Health and Status on page 58.
The following rules for creating storage hierarchies are enforced by the Hierarchies window:
• A storage class may be used only once per hierarchy.
• Disk migration may migrate to one or more target levels in the hierarchy. To create multiple
copies of data, select multiple migration targets.
• Tape migration may only migrate to a single target level in the hierarchy.
• A given storage class may be a migration target for only one storage class above it in the
hierarchy (two different storage classes in the hierarchy may not both migrate to the same storage
class).
This window allows you to manage storage hierarchies. It lists all currently defined hierarchies and
allows you to change existing hierarchies. New hierarchies can also be created from this window.
Field Descriptions
Hierarchy List columns
ID. The unique ID assigned to the storage hierarchy when it was configured.
Hierarchy Name. The descriptive name of the hierarchy.
Levels. The number of storage classes that have been configured into the hierarchy.
Storage Class ID 0 to Storage Class ID 4. The name of the storage class at the given hierarchy level.
HPSS arranges the storage classes into levels internally.
HPSS Management Guide November 2009
Release 7.3 (Revision 1.0) 171