HP P9000 Provisioning for Mainframe Systems User Guide (AV400-96369, October 2011)

- To change a pool-VOL to the top pool-VOL in the Selected Pool Volumes table, select
the pool-VOL and then click Change Top Pool Vol.
6. Click OK.
The information in the Selected Pool Volumes table is applied to Total Selected Pool
Volumes and Total Selected Capacity.
8. In Pool Name, specify a name for this pool:
1. In Prefix, type the characters that will become the fixed characters for the beginning of
the pool name. The characters are case-sensitive.
2. In Initial Number, type the initial number that will follow the prefix name.
9. Click Option.
10. In Initial Pool ID, type the number of the initial pool ID from 0 to 127.
The next available number is entered by default. No number appears if no available pool IDs
exists. When the registered pool ID is entered, the next available pool ID automatically
registered among the subsequent pool ID that was entered.
11. In Subscription Limit, type an integer value from 0 to 65534 as the subscription rate (%) for
the pool. If blank, the subscription rate is set to unlimited.
12. In Warning Threshold, type an integer value from 1 to 100 as the rate (%) for the pool. The
default is 70%.
13. In Depletion Threshold, type an integer value from 1 to 100 as the rate (%) for the pool. The
default is 80%. The value must be more than the value of Warning Threshold.
14. Click Add. The created pool is added to the Selected Pools table.
15. Click Next.
The Create LDEVs window opens. See “Creating a THP V-VOL” (page 55) to create LDEVs.
If Subscription Limit for all the created pools is set to 0%, the Create LDEVs window does not
open.
16. To finish the wizard, click Finish.
17. In the Confirm window, click Apply to register the setting in the task.
If Go to tasks window for status is checked, the Tasks window opens.
Working with THP V-VOLs
About THP V-VOLs
Thin Provisioning Z requires the use of THP V-VOLs, which are virtual volumes with no physical
memory space. In Thin Provisioning Z, multiple THP V-VOLs can be created.
A THP V-VOL is a volume in a thin provisioning storage system. It is the virtual volume from a TP
pool. Data in the TP pool is used via a THP V-VOL. A THP V-VOL is a virtual LU to some hosts.
On mainframe systems, 3390-A is the only supported emulation type on a THP V-VOL.
Relationship between a pool and THP V-VOLs
Before you can use Thin Provisioning Z, a THP V-VOL and a pool are required. Thin Provisioning
Z uses the pool volumes in a pool through the THP V-VOLs.
Creating a THP V-VOL
You can create a THP V-VOL from any of the following tabs:
• The LDEVs tab, which appears when Logical Devices is selected.
• The Pools tab, which appears when Pools is selected.
• The Virtual Volumes tab, which appears when a pool in Pools is selected.
Working with THP V-VOLs 55