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A SMART error is reported.
The bad sector remapping table fills to the specified level.
You can specify the maximum levels for the reassigned and error blocks
in PDM settings. When the table fills to a specified value, PDM triggers a
migration of data from the suspect drive (the physical drive with the bad
sectors) to a replacement drive.
During data migration, you have access to your logical drives but they
respond more slowly to read/write tasks because of the additional
operation. The time required for data migration depends on the size of
the physical drives.
PDM is enabled on all disk arrays by default. You can disable PDM in the
disk array settings, however that action is not recommended.
Transition
Transition is the process of replacing a revertible spare drive that is
currently part of a disk array with an un-configured physical drive or a
non-revertible spare. The revertible spare drive returns to its original
status. In order to run the Transition function, the spare drive must be
revertible.
In addition, you must specify an un-configured physical drive of the same
or larger capacity and same media type as the revertible spare drive.
Synchronization
Synchronization is automatically applied to logical drives when they are
created. Synchronization recalculates the redundancy data to ensure that
the working data on the physical drives is properly in sync.
Mouse-over on the logical drive, click the View button, and look under
Logical Drive Information beside the line that says Synchronized. A Yes
means the logical drive was synchronized.
Running a Background Activity
To run a background activity:
1. Click the AdminTool tab.
2. Click the Background Activity button.
3. Click the Start button beside the activity you want to run.
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