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  1. #1
    Join Date
    Aug 2004
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    Backup Server, RAID 6 or RAID 5 + Hot Spare?

    Your preference and why? I'm leaning toward RAID 6.

    Thanks.

  2. #2
    Join Date
    Aug 2001
    Location
    Canada
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    2,124
    How many drives and what size are we talking about? What RAID controller? All relevant before I'd decide between RAID-5+hot spare or RAID-6.
    www.idologic.com - Reseller, VPS and dedicated hosting - Friendly Customer Service - DirectAdmin - cPanel - InterWorx

  3. #3
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    Aug 2004
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    Adaptec 5805, with 8x 2TB Enterprise SATA (Seagate). Write cache disabled on drives and controller to save costs (no BBU). For my backup server throughput is not as important as data integrity.

  4. #4
    Join Date
    Feb 2002
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    New York, NY
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    4,618
    They'll both give you the same usable capacity. The RAID6 configuration will be more reliable.
    Scott Burns, President
    BQ Internet Corporation
    Remote Rsync and FTP backup solutions
    *** http://www.bqbackup.com/ ***

  5. #5
    There's no way I'd go RAID5. Think about this, with that setup, the moment your array is under the highest risk (during a rebuild) it has zero additional resiliency. Another failure, and the array is toast.
    ColoCrossing - Dedicated to Uptime
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  6. #6
    Join Date
    Mar 2008
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    Lisbon, Portugal
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    271
    More than 10TB on raid 5 is not a good idea... Go to RAID6!

  7. #7
    Join Date
    Aug 2010
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    1,976
    RAID 6 is the smarter choice
    Superb Houston/Los Angeles Colocation: LAYERHOST.COM https://www.layerhost.com/colocation
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  8. #8
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    Aug 2004
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    Great, just setup the RAID6. Thanks for the input.

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