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Thread: Software raid: worth it?

  1. #1
    Join Date
    Nov 2006
    Location
    Gambier, OH
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    60

    Software raid: worth it?

    So I'm about to build myself a new computer (Newegg and Microcenter are wonderful things). It's going to have one of those 6-core AMD 3.2 GHz processors and 2x 1TB drives.

    The reason for the 2x drives is not because I particularly need 2TB of storage (that's what my externals are for), but because I want a backup drive in case one of them fails.

    Now the question is whether I mean backup as in rsync or backup as in RAID 1, implemented in software. I understand that Software RAID implementations make use of the CPU. My question is if anyone can tell me, if I have a 6-core setup, am I going to particularly NOTICE the lost CPU cycles? What kind of CPU usage will I be seeing if I implement Software RAID?

    As always, thanks.

  2. #2
    Join Date
    Aug 2009
    Location
    Brisbane
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    3,779

    Re: Software raid: worth it?

    2 x 1TB drives for 2TB would be RAID0, so you would get no backup at all. You would want RAID1 for 1TB, or better yet 3 x 512GB/1TB drives for 1TB/2TB.

    You wouldnt notice the extra CPU use with a CPU like that, but you might notice the higher latency with RAID0/1/5 or the slightly slower than standard transfer rates (compared to a single drive of the same type) on RAID1.

  3. #3
    Join Date
    Nov 2006
    Location
    Gambier, OH
    Beans
    60

    Re: Software raid: worth it?

    Thanks for the advice.

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