HP XP P9500 Storage - Manual (Page 125)

1. In the Remote Web Console main window, in the Storage Systems tree, select Pool.
The pool name appears below Pool.
2. From the Pool table, select the pool to be recovered.
To select multiple pools that are consecutively listed, highlight all of the pools to be selected
and press the Shift key. To select separate pools, click each pool while pressing the Ctrl key.
3. Click More Actions, and then select Restore Pools.
4. In the Confirm window, confirm the settings, in Task Name type a unique name for this task
or accept the default, and then click Apply.
If Go to tasks window for status is checked, the Tasks window opens.
The recovery time for pools varies depending on pool usage or THP V-VOL usage. Allow roughly
20 minutes of recovery time for every 100 TB of pool or THP V-VOL usage. Recovery time may
vary depending on the workload of the storage system at the time of recovery.
Decrease pool capacity
About decreasing pool capacity
You can decrease pool capacity by deleting pool-VOLs.
When a pool-VOL is removed from a pool, all the used pages in the pool-VOL are moved to other
pool-VOLs.
When you delete a pool or decrease the pool capacity, the released pool-VOLs (LDEVs) will be
blocked. If they are blocked, format them before using them. If the blocked pool-VOL is an external
volume, use Normal Format when formatting the volume.
You can decrease pool capacity for up to eight tasks at the same time. Do not execute a RAID
Manager command to also decrease the capacity of the pool whose capacity is already in the
process of being decreased.
You cannot decrease pool capacity while doing any of the following to a pool.
•
Creating the pool.
•
Deleting the pool.
•
Increasing the pool.
•
Decreasing the pool.
•
Recovering the pool.
•
Stopping decreasing the pool.
•
Changing the threshold.
•
Reclaiming zero pages.
•
Creating THP V-VOLs.
•
Increasing THP V-VOL capacity.
While the pool capacity is being decreased, if maintenance of cache memory is performed, if the
cache memory fails, or if the I/O load to the THP V-VOL related to the pool is high, decreasing
the pool capacity process might fail. In this case, check the Tasks window to determine whether
processing has abnormally ended.
If the processing has ended abnormally, restore the cache memory, and then try decreasing the
pool capacity again.
Managing pools and THP V-VOLs 125