| RAID Level: |
[ 0 ] |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
10 |
53 |
0+1 |
 |
RAID 0+1: High Data Transfer Performance  RAID Level 0+1 requires a minimum
of 4 drives to implement |
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Characteristics/Advantages RAID 0+1 is implemented as a
mirrored array whose segments are RAID 0 arrays RAID 0+1 has
the same fault tolerance as RAID level 5 RAID 0+1 has the same overhead for fault-tolerance as mirroring alone High I/O rates are achieved thanks to multiple stripe segments Excellent solution for sites that need high performance but are not
concerned with achieving maximum reliability |
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Disadvantages RAID 0+1 is NOT to be confused
with RAID 10. A single drive failure will cause the whole array to become,
in essence, a RAID Level 0 array Very expensive / High overhead All drives must move in parallel to proper track lowering sustained
performance Very limited scalability at a very high inherent cost |
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