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RAID 10 or RAID 50

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RAID 10 or RAID 50

Postby guest » Tue Jan 27, 2009 5:56 pm

RAID 10 is faster than RAID 50 for long bursts of high I/O which virtual machines(and Lab Manager) require while RAID 50 give you more space than RAID 10.
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Postby guest » Tue Jan 27, 2009 5:56 pm

They are the trade-off between disk capacity and added data availability or performance. RAID 1/10 is costly in terms of lost disk space (50%), but high in data availability.
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Postby guest » Tue Jan 27, 2009 6:05 pm

RAID Level Comparison

Features RAID 0 RAID 1 RAID 5
Minimum # Drives 2 2 3
Data Protection No Protection Single-drive failure Single-drive failure
Read Performance High High High
Write Performance High Medium Low
Read Performance (degraded) N/A Medium Low
Write Performance (degraded) N/A High Low
Capacity Utilization 100% 50% 67% - 94%

Features RAID 10
Minimum # Drives 4
Data Protection Up to one disk failure in each sub-array
Read Performance High
Write Performance Medium
Read Performance (degraded) High
Write Performance (degraded) High
Capacity Utilization 50%
Typical Applications Fast databases, application servers

Features RAID 50
Minimum # Drives 6
Data Protection Up to one disk failure in each sub-array
Read Performance High
Write Performance Medium
Read Performance (degraded) Medium
Write Performance (degraded) Medium
Capacity Utilization 67% - 94%
Typical Applications Large databases, file servers, application servers

Features RAID 60
Minimum # Drives 8
Data Protection Up to two disk failure in each sub-array
Read Performance High
Write Performance Medium
Read Performance (degraded) Medium
Write Performance (degraded) Low
Capacity Utilization 50% - 88%
Typical Applications Data archive, backup to disk, high availability solutions, servers with large capacity requirements
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