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How big is the CPU performance hit while using 2 hard drives in RAID 1?

Discussion in 'Storage' started by BloodTotal, Dec 20, 2012.

  1. BloodTotal

    BloodTotal New Member

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    I will be gaming and doing normal things as well. I want to start off with a raid 1, but I may eventually use another raid setup. So this question applies to the performance hit for all raids. How high is it?

    Thanks!
  2. slyfox2151

    slyfox2151

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    id say less then 2 % for raid1.... its just mirrored data...



    only Raid5/6 ect with parity use a lot of cpu power.
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  3. FordGT90Concept

    FordGT90Concept "I go fast!1!11!1!"

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    RAID0 = 0%
    RAID1 = 0%
    RAID10 = 0%
    RAID0+1 = 0%
    RAID5 = 0-2%
    RAID6 = 1-3%

    It's more of a deterrant on memory throughput than CPU but even then, we're talking very little for HDDs (200 MB/s for two drives). SSDs, due to their higher performance, could put a lot more strain on a system but unless you're talking more than four drives in the array, I wouldn't worry about it.
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    Crunching for Team TPU
  4. BloodTotal

    BloodTotal New Member

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    what if I had ssds in raid 1 for the operating system and regular harddrives for everything else? Would you still recommend raid 1?

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