HP XP RAID Manager Software - Manual (Page 42)

Deleting V-VOLs
Prerequisite information
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To be deleted, a V-VOL cannot be part of a Snapshot pair. The pair must first be deleted
before the V-VOL can be deleted.
1. In the Remote Web Console tree, select Logical Devices.
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In the Remote Web Console tree, select Logical Devices.
2. In the list, click one or more V-VOLs that you want to delete.
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To select all pool-VOLs in the list, click Select All Pages.
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- To filter the rows, click ON in the Filter field.
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To specify the number of rows to be displayed, click Options and make the selection.
3. Click More Actions > Delete LDEVs.
4. In the Delete LDEVs dialog’s Task Name box, enter the task name.
5. Click Apply.
Powering-off to change the microcode
This section explains how pairs are maintained when the storage system is powered off, and when
the microcode is replaced.
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“Powering-off” (page 42)
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“Replacing the microcode offline” (page 42)
Powering-off
Stop host I/O to the P-VOL before switching off the power supply.
When power is restored, Snapshot’s behavior depends on whether data that was in shared memory
before powering off is present after powering on.
If information in shared memory before powering off is present after powering on
If information in the shared memory is present after switching off the power supply, the pools and
Snapshot pairs can usually be used. However, since the storage system checks the status of the
pools and the pool volumes, if the pool volumes are blocked at that moment, the pool will be
blocked and the status of the Snapshot pairs changes to PSUE. When this occurs, you need to
recover the pools after the switch-on.
When you store Snapshot data by consistency group, if the power supply is switched off before
the status of all the pairs in a consistency group has changed completely, the storing of Snapshot
data will not be resumed, and the status of some pairs may remain unchanged when the power
supply is switched again.
If information in shared memory is lost after switching off the power supply
The storage system has a battery used to maintain the information in shared memory. However,
when a certain amount of time elapses after the breaker is turned off, the battery dies and the
information in the shared memory is lost. If this occurs, the pools and pairs must be re-created after
the switch-on.
For information about the amount of time before the information in the shared memory is lost when
the breaker is turned off, check with HP Technical Support.
Replacing the microcode offline
The microcode is usually replaced online. In the cases when it is replaced offline (for example,
when configuration of shared memory needs changing), pool and pair information in shared
memory is lost and must be re-created.
42 Monitoring and maintenance