Linux software RAID: RAID 5 vs RAID 10 performance and other RAID levels

Written by Gionatan Danti on . Posted in Linux & Unix

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Synthetic test conclusions

From these data, when can make some preliminary conclusions.

Excluding the RAID 0 setup (which is too prone to data loss) and RAID 1 setup (which focus itself on reliability only), the battle here is between RAID 5 and RAID 10. The former as an higher read speed, but can be severely limited in some write scenario. For this reason, I generally prefer the RAID 10 configuration: it has a very well balanced mix of performance and reliability. The only real drawback is that you lose 50% of total disks space: in some circumstances this space loss can be unacceptable.

Lets move on real word tests now...

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