Better performance: RAID 1 or RAID 5?

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RAID 1
RAID 1 vs RAID 5
RAID 5
RAID Performance
Which has better performance Raid-1 or RAID-5?
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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: RAID Levels Explained.

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  • jinteik
    if you are doing SQL then better to have Raid 1, but if not so critical and etc, Raid 5 will be good.
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  • Sixball
    I say neither - RAID 5 is good, RAID 1+0 or 0/1 for redundancy - :)
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