Hp Smart Storage Administrator Manuel d'utilisateur Page 111

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Troubleshooting 111
No data is lost when a drive fails, as long as no failed drive is mirrored to another failed drive.
Up to half of the physical drives in the array can fail.
Disadvantages:
This method is expensive, because many drives are needed for fault tolerance.
Only half of the total drive capacity is usable for data storage.
RAID 1 (ADM) and RAID 10 (ADM)
In RAID 1 (ADM) and RAID 10 (ADM) configurations, data is duplicated to two additional drives.
When the array contains only three physical drives, the fault-tolerance method is known as RAID 1 (ADM).
When the array has more than three physical drives, drives are mirrored in trios, and the fault-tolerance
method is known as RAID 10 (ADM).
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