HP XP P9500 Storage - Manual (Page 118)

Releasing pages in a V-VOL
You can release pages in a THP V-VOL to free pool capacity. If all the pages in the THP V-VOL
contains zero data (no logical records), you can discard the zero data, and then release those
pages. Before releasing pages in a THP V-VOL, see
“About releasing pages in a THP V-VOL” (page
117) ).
Procedure 12 To release pages in a THP V-VOL
1. In the Remote Web Console main window, in the Storage Systems tree, select a pool associated
with the V-VOLs whose pages are released. The pool information appears on the right. Pool.
2. Click the Virtual Volumes tab.
3. From the Virtual Volumes table, select the THP V-VOL for which you want to release the pages.
Select multiple THP V-VOLs using the Shift key (if the THP V-VOLs are adjacent), or using the
Ctrl key (if the THP V-VOLs are not adjacent).
4. Click More Actions, and then select Reclaim Zero Pages.
The Reclaim Zero Pages window opens.
You cannot release pages in a THP V-VOL when the THP V-VOL is not in a normal status or
the THP V-VOL is discarding zero data.
5. 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.
After discarding zero data and releasing pages in the THP V-VOL is complete, click Refresh in
Remote Web Console to update the Page Status. If the Page Status is not immediately updated,
wait a while, and then click Refresh again.
Stopping the release of pages in a THP V-VOL
1. In the Remote Web Console main window, in the Storage Systems tree, select a pool associated
with the V-VOLs in which the pages are being released. The pool information appears on the
right.
2. Click the Virtual Volumes tab.
3. From the Virtual Volumes table, select the THP V-VOL for which you want to stop releasing
pages.
Select multiple THP V-VOLs using the Shift key (if the THP V-VOLs are adjacent), or using the
Ctrl key (if the THP V-VOLs are not adjacent).
4. Click More Actions, and then select Stop Reclaiming Zero Pages.
The Stop Reclaiming Zero Pages window opens.
You cannot stop releasing the pages in a THP V-VOL where zero data is not being discarded.
5. 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.
Enabling/disabling tier relocation of a THP V-VOL
You can enable or disable tier relocation of individual THP V-VOLs or on all THP V-VOLs.
THP V-VOLs on which tier relocation is disabled are excluded from the targets for the tier range
calculation, and are not reflected in the performance information of pools. If tier relocation is
disabled on all THP V-VOLs in a pool, performance information of a pool is unavailable in the Tier
Properties window.
118 Configuring thin provisioning