Comparing Different Implementations of RAID Levels

Comparing Different Implementations of RAID Levels

SQL Server 2000

Comparing Different Implementations of RAID Levels

There are advantages and disadvantages to using the various implementations of RAID (redundant array of independent disks).

RAID implementation Advantage Disadvantage
Microsoft® WindowsNT®-based striping or Windows 2000 RAID-5 volumes No added hardware cost. Uses system processing resources.
Hardware-based striping Does not compete for processor cycles. Best performance of all RAID implementations. Additional cost of specialized hardware.

RAID solutions typically used with Microsoft SQL Server™ 2000 provide varying levels of redundancy and fault tolerance.

RAID implementation Advantage Disadvantage
Hardware-based RAID 3, 5, or 10 Excellent performance. Does not compete for processor cycles. Cost.
Hardware-based RAID 1 Excellent redundancy. Does not compete for processor cycles. Additional cost due to more hardware.
Hardware-based RAID 10 Excellent performance. Excellent redundancy. Additional cost due to more hardware.
Windows NT–based RAID 1 or Windows 2000 mirrored volumes Good redundancy. Low cost. Uses system processing resources.
Windows NT– or Windows 2000-based RAID 5 Excellent read performance. Low cost. Uses system processing resources.

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