Intel SRCU31, User Manual

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Storage Console Plus 157
Replace a Logical Drive
Click the right mouse button on the logical drive icon.
If a logical drive of an array drive without a hot fix drive should fail (or is very likely to fail), you
should replace the defective hard disk drive with a new one as soon as possible, because the array
drive is without redundancy. The replacement logical drive has to have at least the same capacity
as the failed one. The replacement is carried out with StorCon or the . Before the logical
drive can be removed, you must select a new logical drive from the box with available physical
drives that is shown after this option is selected. If no physical drive is offered, you have to use the
Hot Plug: Replace Drive (hotplug_replace_drive) function to add a new drive. After the
confirmation, the old logical drive is removed. Next, the data is rebuilt on the new logical drive.
During this process the array is in the rebuild state (state_build) and therefore not redundant.
The Different States of an Array Drive
Some of these states may have the addition of /patch (for example, build/patch, ready/patch). This
indicates that the original array drive. For example, the parity information was recalculated or the
array drive has been patched from the error state into the fail state. This may become helpful in a
situation where two logical drives of an array drive fail at the same time, but only one of the two
logical drives is really defective and the other was blocked out since it was connected with the same
I/O channel as the defective one. The array drive’s state is error and normally all data would be
lost. Intel RAID Controller SRCU31 includes some functions that allow the patch of this array
drive from the error state into the fail sate. Before the actual patch, the defective drive has to be
physically removed from the array drive. Such a patch procedure should only be used after a
consultation with a trained support person (a printout of the Save Information file, is extremely
helpful).
The Ready State
The array drive is fully operational when in the ready state. All redundant information is present,
that is, a hard disk drive can fail without impairing the functionality of the array drive. This is the
normal state of an array drive. The ready/expand state indicates that the RAID level and/or
capacity are currently migrated/expanded.
Figure 95. The Ready State