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On 03/05/2020 21:07, Rich Freeman wrote: |
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> I don't think you should focus so much on whether read=write in your |
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> RAID. I'd focus more on whether read and write both meet your |
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> requirements. |
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If you think about it, it's obvious that raid-1 will read faster than it |
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writes - it has to write two copies while it only reads one. |
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Likewise, raids 5 and 6 will be slower writing than reading - for a |
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normal read it only reads the data disks, but when writing it has to |
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write (and calculate!) parity as well. |
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A raid 1 should read data faster than a lone disk. A raid 5 or 6 should |
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read noticeably faster because it's reading across more than one disk. |
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If you're worried about write speeds, add a cache. |
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Cheers, |
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Wol |
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