R/Evolution 2000 Series, Руководство по устранению неисправностей

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Chapter 4 Troubleshooting Using RAIDar 57
Caution – If the virtual disk does not have enough drives to continue operation,
when a dequarantine is done, the virtual disk goes offline and its data cannot be
recovered.
To remove a virtual disk from quarantine:
1. Select Manage > Utilities > Recovery Utilities > Vdisk Quarantine.
For each virtual disk, the virtual disk panel shows a status icon; the name, RAID
level, size, number of disk drives, and number of volumes; and utility status, if any.
2. Select the virtual disk to dequarantine.
3. Click Dequarantine Selected Virtual Disk.
Trusting a Virtual Disk for Disaster Recovery
If a virtual disk appears to be down or offline (not quarantined) and its drives are
labeled “Leftover,” use the Trust Virtual Disk function to recover the virtual disk.
The Trust Virtual Disk function brings a virtual disk back online by ignoring
metadata that indicates the drives might not form a coherent virtual disk. This
function can force an offline virtual disk to be critical or fault tolerant, or a critical
virtual disk to be fault tolerant. You might need to do this when:
■
A drive was removed or was marked as failed in a virtual disk due to
circumstances you have corrected (such as accidentally removing the wrong
disk). In this case, one or more drives in a virtual disk can start up more slowly,
or might have been powered on after the rest of the drives in the virtual disk.
This causes the date and time stamps to differ, which the storage system
interprets as a problem. Also see “Removing a Virtual Disk From Quarantine” on
page 56.
■
A virtual disk is offline because a drive is failing, you have no data backup, and
you want to try to recover the data from the virtual disk. In this case, the Trust
Virtual Disk function might work, but only as long as the failing drive continues
to operate.
Caution – If used improperly, the Trust Virtual Disk feature can cause unstable
operation and data loss. Only use this function for disaster recovery purposes and
when advised to do so by a service technician. The virtual disk has no tolerance for
any additional failures.