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

5. In the Confirm window, click Apply.
The setting is changed.
If Go to tasks window for status is checked, the Tasks window opens.
Removing the THP V-VOL to be registered
If you do not want to register the THP V-VOL, you can remove it from the registering task.
1. In the Selected LDEVs table in the Create LDEVs window, select the LDEV, and then click Remove.
2. Click Finish.
3. In the Confirm window, click Apply.
The LDEV is removed.
If Go to tasks window for status is checked, the Tasks window opens.
Thresholds
About pool utilization thresholds
Thin Provisioning Z monitors pool capacity using thresholds. A threshold is the proportion (%) of
used capacity of the pool to the total pool capacity. Each pool has its own pool threshold values.
• Warning Threshold: Set the value between 1% and 100%, in 1% increments. The default is
70%.
• Depletion Threshold: Set the value between 1% and 100%, in 1% increments. The default is
80%. The depletion threshold must be higher than the Warning threshold
Pool usage over either threshold will cause a warning to be issued in the form of SIMs (Service
Information Messages) to Remote Web Console and SNMP (Simple Network Management Protocol)
traps to the open-systems host. For more information on SNMP traps and the SNMP Manager, see
the HP P9000 SNMP Agent User Guide. See (page 60) for more information about SIMs.
The following figure illustrates a total pool capacity of 1 TB, Warning Threshold of 50%, and
Depletion Threshold of 80%. If the used capacity of the pool is larger than 50% (500 GB) of the
total pool capacity, a SIM is reported to Remote Web Console and an SNMP trap is reported to
the open-systems host. If the used capacity of the pool increases and exceeds the Depletion Threshold
(80%), a SIM and an SNMP trap are reported again.
Note that in this scenario, if the actual pool usage percentage is 50.1%, only 50% appears on
the Remote Web Console window because the capacity amount is truncated after the decimal
point. If the threshold is set to 50%, a SIM and an SNMP trap are reported even though the pool
usage percentage appearing on the screen does not indicate an exceeded threshold.
Pool subscription limit
The value of using subscription limit is to manage the maximum amount of over-provisioning that
is acceptable for a pool. By managing the pool subscription limit, you can control the potential
demand for storing data that might exceed the pool capacity.
58 Configuring thin provisioning