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 RAID performance
RAID 1, RAID 1 vs RAID 5, RAID 5, RAID 5 Performance, RAID Performance
Which has better performance Raid-1 or RAID-5 ?

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ASKED: February 19, 2011  10:49 PM
UPDATED: November 1, 2011  1:50 AM
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It depends what you are doing. If you have a mostly read workload, then RAID 5 as you'll have more spindles to read off of. If you have a mostly write workload, then RAID 1 as you don't have any parity calculations to deal with. That said, if you put enough disks behind the RAID 5 that will mostly overcome the parity calculation performance hit and write performance will even out. Learn more <a href="http://www.partition-magic.org/hardware-raid/raid-levels-explained.html">RAID Levels Explained</a>.
Last Wiki Answer Submitted:  November 1, 2011  1:49 am  by  Denny Cherry   64,520 pts.
All Answer Wiki Contributors:  Denny Cherry   64,520 pts.
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if you are doing SQL then better to have Raid 1, but if not so critical and etc, Raid 5 will be good.

jinteik
 15,485 pts.
 

I say neither – RAID 5 is good, RAID 1+0 or 0/1 for redundancy – :)

Sixball
 8,500 pts.