D-Link ShareCenter Pro DNS-1550-04 User Manual page 28

ShareCenter Pro User Manual
 Level 1: Park R/W heads
 Level 2: Slow down (need to be supported by hard
drive)
 Level 3: Spin down
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Spin Down Type
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Power Saving Idle Time
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Power Saving Standby Time
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Power Saving Stopped Time
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Enable Coercion:
 This feature is designed for fault-tolerant logical
drives (RAID 0, 1, 5, 6, and 10). It is generally
recommended to use physical drives of the same
size in your disk arrays. When this is not possible,
physical drives of different sizes will work but the
system must adjust for the size differences by
reducing or coercing the capacity of the larger
drives to match the smaller ones. You can choose
to enable Capacity Coercion and any one of four
methods.

Capacity Coercion also affects a replacement
drive used in a disk array. Normally, when a
physical drive fails, the replacement drive must be
the same capacity or larger. However, the Capacity
Coercion feature permits the installation of a
replacement drive that is slightly smaller (within 1
gigabyte) than the remaining working drive. For
example, the remaining working drives can be
80.5GB and the replacement drive can be 80.3,
since all are rounded down to 80GB. This permits
the smaller drive to be used.
 Without Capacity Coercion, the controller will not
permit the use of a replacement physical drive that
is slightly smaller than the remaining working
drives.
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Coercion Method – Choose a method from the
dropdown menu:
 GB Truncate – (Default) Reduce the useful
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