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RAID 10
In RAID 1+0, or RAID 10, the drives in the array is mirrored first (RAID 1) and then striped (RAID 0). This provides a better fault tolerance than RAID (0+1). At least 4 drives is needed.
GRAPHIC OF RAID 10
1) Data is first transmitted to RAID controller
2) Then, the data is written to “array 1” and is then mirrored to “array 2”
3) Then, “array 1” and “array 2” is striped onto “array 3” and “array 4”
RAID 10 can survive multiple drive failure, as long as the drive failure is in different sets.
The disadvantage here is storage capacity is halved, due to mirroring.
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