HP XP P9000 Command View Advanced Edition Software - Manual (Page 27)

• Options for rearranging volumes
You must specify the following items when you create a Smart Tiers Software tier.
For HP StorageWorks P9500 Disk Array:
• Drive type (hardware tier). You can specify up to three types.
• Parity groups for each drive type.
In addition, you can specify volumes to create a THP pool. After you create a pool, you can create
THP volumes from the pool, or allocate a THP volume to a host by specifying a THP pool.
Naming a THP pool allows you to search, filter, and sort on pool names, which makes tasks, such as
allocating and creating volumes, easier.After you create a THP pool, you can check the pool information
to determine if you need to add capacity or migrate volumes. A pool for Thin Provisioning Software
that is in use can be expanded into a multi-tier configuration by changing it to a pool for Smart Tiers
Software.
If a THP pool includes zero pages, usability is poor. You can reclaim zero pages periodically and
when performing a backup or restoring data from tape storage.
Prerequisites for creating THP pools
Before creating THP pools, you must register the target storage system and verify these items, depending
on the storage system.
When using XP24000/20000 and HP StorageWorks P9500 Disk Array for THP pools:
• Parity group
When using HP StorageWorks P9500 Disk Array for Smart Tiers Software pools:
• Hardware tier: drive type and drive speed (RPM)
• Parity group for each hardware tier
Creating a THP pool
To create a THP pool:
1. On the Resources tab, select THP Pools under the target storage system.
2. Click Create Pool.
The Create Pool dialog box opens.
3. Specify the pool name and other information.
4. Click Show Plan to review the plan and specify additional information, as appropriate:
• Verify the information that is displayed.
• Enter a name in Task Name.
• Specify when the task should execute.
5. Click Submit.
The plan is registered as a task.
6. In the Storage Systems tree, return to the target storage system, click THP Pools and confirm that
the pool is created.
User Guide 27