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RAID Tutorial



RAID LEVEL:
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RAID 10 : Very High Reliability Combined with High Performance



RAID Level 10 requires a minimum of 4 drives to implement









Characteristics & Advantages
RAID 10 is implemented as a striped array whose segments are RAID 1 arrays

RAID 10 has the same fault tolerance as RAID level 1

RAID 10 has the same overhead for fault-tolerance as mirroring alone

High I/O rates are achieved by striping RAID 1 segments

Under certain circumstances, RAID 10 array can sustain multiple simultaneous drive failures

Excellent solution for sites that would have otherwise gone with RAID 1 but need some additional performance boost






Disadvantages
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
  • Database server requiring high performance
        and fault tolerance





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