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Thread: Raid configuration for best performance?

  1. #1
    amagdic is offline Starter Member
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    Question Raid configuration for best performance?

    Hi,

    we have Sun StorageTek 2530 with 12 600GB 15K drives.

    What is best recommended RAID configuration for 200 users enviroment, for quick webmail response and heavy calendar usage? We would need about 2TB of storage space.

    I am asking, since we used Zimbra with NAS with SATA RAID6, and we've delays of 2-3 seconds when sending emails from webmail


    regards

  2. #2
    Dirk's Avatar
    Dirk is offline Moderator
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    Raid 10 is generally considered to offer best performance in this instance.
    I'd say put five of the drives in a stripe (raid 0) giving you 5x600GB space, another five in a mirror of that stripe (raid 1) and set the other two to be online spares.

    That'd give you a high speed raid 0 stripe of 3tb with a full mirror for security.

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    dave_kempe is offline Partner (VAR/HSP)
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    yeah i think that storagetek box has a raid 10 mode, so you can get an even number of drives, and put them in raid10, lose half of them to redundancy and keep a couple as spares. 12 -2 = 10/2 = 5*600= 3TB. If you are having I/O issues, get more ram, and make sure the O/S has enough to buffer the I/O as well. A decent amount of battery backed ram on the controller is also good.
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    p_nyet is offline Loyal Member
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    for a speed and reliability Raid 5 + 1

  5. #5
    phoenix is online now Zimbra Consultant & Moderator
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    Quote Originally Posted by p_nyet View Post
    for a speed and reliability Raid 5 + 1
    RAID5 is not a good choice in any but the smallest environments and is certainly outperformed by RAID10.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  6. #6
    p_nyet is offline Loyal Member
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    Quote Originally Posted by phoenix View Post
    RAID5 is not a good choice in any but the smallest environments and is certainly outperformed by RAID10.
    , yeah...
    Anyway I use raid 10

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    Aderium is offline Project Contributor
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    What about in a san environment would you do RAID 5 pools ?
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    danielfarrelly is offline Special Member
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    Quote Originally Posted by Aderium View Post
    What about in a san environment would you do RAID 5 pools ?
    we run our SAN as follows:

    raid0+1
    conf, db, index, log, logger, redolog and store

    raid5
    backup

  9. #9
    p_nyet is offline Loyal Member
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    RAID 5+1 also called as "RAID for paranoid", it's similiar to RAID 0+1 but instead of building a RAID 0 out of RAID 0 arrays.

  10. #10
    veronica is offline Outstanding Member
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    I would recommand RAID 5 for backup partition and rest everything else on RAID 1+0

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