HP XP Array Manager Software - Manual (Page 210)

About tier-based storage management
In HP XP7 Command View Advanced Edition, you must have a Tiered Storage Manager license to
perform tier-based storage management operations.
In a tier-based storage management system, storage system resources are grouped and managed in
tiers. Tiers can be created for volumes or for Thin Provisioning (THP/Smart) pools to allow high-capacity
resources to be centrally managed.
Tiers allow you to allocate data according to its purpose. This allocation can be done by grouping
drives in a storage system by type, or by creating groupings of particular tasks or functions. For
example, you can allocate frequently accessed data to a tier of high-reliability drives or storage
systems.
You can also use storage system resources more efficiently by storing data that is only for archive
purposes on a tier of SATA drives or older storage systems. A volume can also have a volume belong
to multiple tiers.
When you are managing a large variety of resources in tiers, you can check the performance status
of all the resources in the tiers at the same time, and you can select the migration-source and
migration-target volumes for data migrations from the tiers. By selecting tiers that match all the
requirements when volumes will be allocated to hosts, you can allocate all the necessary volumes
from the selected tiers at the same time.
Related topics
• Creating tiers , page 210
• Expanding a tier , page 211
Values to ensure acceptable tier performance
The values below ensure the operation of Tiered Storage Manager. Performance might slow down
or memory might become insufficient if a value exceeds these values.
Table 19 Tiered Storage Manager operational values
Recommended value Value for which performance is ensured Item
30 or less 100
Number of tiers in a
single storage system
1,000 or less 1,300
Number of unused
volumes a tier
Creating tiers
Create tiers to prioritize data based on accessibility requirements.
Prerequisites
• You must have a valid license for Tiered Storage Manager.
• Register one or more of the following HP storage systems:
• HP P9500 (HP XP P9500 Storage)
• XP24000/XP20000
• XP12000/XP10000/SVS200
Grouping resources 210