Working With Pools; About Pools - HP XP7 User Manual

You can use this procedure to change a Smart Tiers Z pool to a Thin Provisioning Z pool. However,
you cannot change the pool status of Smart Tiers Z to disable in the following cases:
Tier relocation is being executed manually.
Pool-VOLs are being deleted.
Zero pages are being reclaimed.
Prerequisites
The Storage Administrator (Provisioning) role is required to perform this task.
Procedure
1. Open the Edit Pools window.
In Command View Advanced Edition:
a. On the Resources tab, click Storage Systems, and then expand All Storage Systems.
b. Expand the target storage system, right-click THP Pools, and then select System GUI.
In Remote Web Console:
a. Click Storage Systems, and then expand the Storage Systems tree.
b. Click Pools.
2. In Remote Web Console , click Pools in the Storage Systems tree.
3. In the Pools tab, select a pool to be changed from a pool for Smart Tiers Z to a pool for Thin
Provisioning Z.
4. Click More Actions and select Edit Pools.
5. In the Edit Pools window, check Smart Pool.
6. Select Disable and click OK in the warning message.
7. Click Finish.
The Confirm window appears.
8. In the Task Name text box, enter the task name.
You can enter up to 32 ASCII characters and symbols in all, except for \ / : , ; * ? " < > |.
The value "date-window name" is entered by default.
9. In the Confirm window, click Apply to register the setting in the task.
If the Go to tasks window for status check box is selected, the Tasks window appears.

Working with pools

About pools

Thin Provisioning Z requires the use of pools. A pool consists of more than one pool-VOL.
A storage system supports up to 128 pools, each of which can contain up to 1024 pool-VOLs and
63,232 THP V-VOLs per pool. The pool for Thin Provisioning Z cannot be used in conjunction with
other pools.
A pool number must be assigned to a pool. Multiple THP V-VOLs can be related to one pool.
capacity of the pool(MB) = total number of pages * 38 - 3800
3800(MB) in the formula is the management area size of the pool-VOL with System Area.
total number of pages= Σ(floor(floor(pool-VOL number of blocks ÷ 1 16) ÷ 672))
for each pool-VOL
1 cylinder means 1740 blocks
floor( ) means to truncate the part of the formula within the parentheses after the decimal point.
1 18 Configuring thin provisioning