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JetStor III


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





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

Recommended Applications

  • Imaging applications
  • General fileserver





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