Practical RAID Performance?

Posted by wag2639 on Super User See other posts from Super User or by wag2639
Published on 2010-06-02T06:38:07Z Indexed on 2010/06/02 6:44 UTC
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Filed under:

Performance

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raid

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raid-0

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raid-1

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raid-5

I've always thought the following to be a general rule of thumb for RAID:

RAID 0: Best performance for READ and WRITE from stripping, greatest risk
RAID 1: Redundant, decent for READ (I believe it can read from different parts of a file from different hard drives), not the best for WRITE
RAID 0+1 (01): combines redundancy of RAID 1 with performance of RAID 0
RAID 1+0 (10): slightly better version of RAID 0+1
RAID 5: good READ performance, bad WRITE performance, redundant

IS THIS ASSUMPTION CORRECT? (and how do they compare to a JBOD setup for R/W IO performance)

Are certain practical RAID setups better for different applications: gaming, video editing, database (Acccess or SQL)?

I was thinking about hard disk drives but does this apply to solid state drives as well?

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