SmartStor NAS User Manual
Patrol is concerned with the condition of the media itself,
not the data recorded on the media. If Media Patrol
encounters a critical error, it triggers
PDM if PDM is
enabled on the
disk array.
Media Patrol has three status conditions:
Running – Normal. You can access your logical drives at
any time.
Yield – Temporary pause while a read/write operation takes
place.
Paused– Temporary pause while another background runs.
Or a pause initiated by the user.
− Redundancy Check:
Redundancy Check is a routine maintenance procedure for
fault-tolerant disk arrays (those with redundancy) that
ensures all the data matches exactly. Redundancy Check
can also correct inconsistencies.
− Rebuild:
When you rebuild a disk array, you are actually rebuilding
the data on one physical drive.
When a physical drive in a disk array fails and a spare drive
of adequate capacity is available, the disk array begins to
rebuild automatically using the spare drive.
If there is no spare drive of adequate capacity, but the Auto
Rebuild function is ENABLED, the disk array begins to
rebuild automatically as soon as you remove the failed
physical drive and install an un-configured physical drive in
the same slot.
If there is no spare drive of adequate capacity and the Auto
Rebuild function is DISABLED, you must replace the failed
drive with an un-configured physical drive, then perform a
Manual Rebuild. See below.
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