Posted by: Anonymous
[ip: 68.226.113.197]
on April 10, 2008 02:18 AM
RAID 10 or RAID 1+0 / RAID 0+1 depending on the manufacturer is the very best in performance. RAID 10 is either striped (0) then mirrored (1) = RAID 0+1 or mirrored (1) then striped (0) = RAID 1+0. Either of those options are a wise choice for the best overall performance and protection. RAID 5 takes 6 operations for one I/O. Read data, read data, read parity, write data, write data and finally write parity. RAID 6 (two parity drives) is even worse, but gives you the wonderful feeling of being able to survive 3 HD failures.
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Inspecting disk IO performance with fio
Posted by: Anonymous [ip: 68.226.113.197] on April 10, 2008 02:18 AM#