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what can linux software based raid5 do for me?...
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- 06-16-2005 #1
- Join Date
- Dec 2004
- Portland, OR
Software RAID-5 ?
what can linux software based raid5 do for me?
- 06-16-2005 #2
Level 5 -- The most common type of RAID. By distributing parity across some or all of an array's member disk drives, RAID level 5 eliminates the write bottleneck inherent in level 4. The only bottleneck is the parity calculation process. With modern CPUs and software RAID, that isn't a very big bottleneck. As with level 4, the result is asymmetrical performance, with reads substantially outperforming writes. Level 5 is often used with write-back caching to reduce the asymmetry. Array capacity is equal to the capacity of member disks, minus capacity of one member disk.