HP XP P9500 Storage - Manual (Page 132)

2. Select a pool that is changed from a pool for Smart Tiers to a pool for Thin Provisioning.
The pool information appears.
3. Click More Actions to select Edit Pool.
The Edit Pool window appears.
4. Check Smart Pool and select Disable from the Smart Pool option.
5. Click Finish.
The Confirm window appears.
6. 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.
7. 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 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 or Snapshot cannot be used in conjunction
with other pools.
Snapshot also uses pools. The 128-pool maximum per storage system applies to the total number
of both Snapshot pools, and Thin Provisioning pools, and Smart Tiers pools. The pool for Thin
Provisioning or Snapshot or Smart Tiers cannot be used in conjunction with other pools. For more
information, see the HP XP P9000 Snapshot User Guide.
A pool number must be assigned to a pool. Multiple THP V-VOLs can be related to one pool.
The total pool capacity combines the capacity of all the registered Thin Provisioning pool-VOLs
assigned to the pool. Pool capacity is calculated using the following formulas:
•
capacity of the pool (MB) = total number of pages × 42 - 4200
4200 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 ч 512) ч
168)) for each pool-VOL
where
•
floor( ) means to truncate the part of the formula within the parentheses after the decimal point.
About pool-VOLs
Pool-VOLs are grouped together to create a pool. When a new pool is created, the available
pool-VOLs are selected in the Select Pool VOLs window and added to the Selected Pool Volumes
table. Every pool must have a pool-VOL with System Area.
During initial creation of a pool, designate a pool-VOL as the pool-VOL with System Area, select
the pool-VOL, and click Change Top Pool VOL in the selected pool volumes table.
132 Configuring thin provisioning