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Thread: recommended RAID level

  1. #1
    jdunker is offline New Member
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    Default recommended RAID level

    I'm curious about what the recommended RAID level for my new Zimbra server is. In the Admin guide it mentions that RAID5 is not ideal, so what is?

    I'm looking at an initial install of approx 50 users.

    So, RAID 1? RAID 10?

    TIA for any advice.

    -Jason

  2. #2
    phoenix is offline Zimbra Consultant & Moderator
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    Default

    Welcome to the forums.

    You could use raid 5 for that number of users but I'd recommend raid 10.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  3. #3
    Ericx is offline Loyal Member
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    Default Hardware Raid

    If you have a healthy budget I'd get hardware raid with SCSI Drive.

    I have 75 users on a Dell Poweredge with two 15,000 rpm SCSI Drives with Perc4 hardware Raid ontroller card. Runs very nicely. Hardware RAID is so much nicer than software.

    I'm using mirroring since I'm not going to let users have more than 500 mb each. I'm limiting them for backup reasons. They get alot of large cad drawings and they are supposed to save them to the project folders so the team does not have to look around for them. When I give them big boxes they just hold onto those files forever and I have to back them up in the Projects folder and then back them up on email. Too much wasted backup space.
    EricX

  4. #4
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    tdi is offline Active Member
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    Dell poweredge, 50users , one disc. Runs smootlhly.

  5. #5
    jaguado is offline Junior Member
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    Default

    Dell PowerEdge 2950
    RAM: 4G
    Users: 50

    4x500G SATA on PERC @ RAID 5 with 1 Hot-Spare

  6. #6
    Himanshu is offline Advanced Member
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    Quote Originally Posted by phoenix View Post
    Welcome to the forums.

    You could use raid 5 for that number of users but I'd recommend raid 10.
    What About RAID50 as Compared to RAID5 and RAID10 ?

    Would RAID50 Give Better performance than RAID5 and RAID10 ?

    We have 8 Drives each of 300 GB of SAS, with around 500 Users expected to Start with .

  7. #7
    rrust is offline Trained Alumni
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    we were using 4x 500gb sata drives in raid 10 in an asus 1u server with the megaraid. went to 4 x300gb sas drives raid 10, less storage but much better through put and much snappier performance! 120gb used, 300 accounts

  8. #8
    danielfarrelly is offline Special Member
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    Quote Originally Posted by Himanshu View Post
    What About RAID50 as Compared to RAID5 and RAID10 ?

    Would RAID50 Give Better performance than RAID5 and RAID10 ?

    We have 8 Drives each of 300 GB of SAS, with around 500 Users expected to Start with .
    raid50 might be better (with 8 drives, i assume you're striping two raid5 sets), but you're still using distributed parity which kills write ops compared to a comparable raid10.

  9. #9
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    For 50 users, I would assume that the OP doesn't have enough drives to throw at it for a RAID 50. That would be a bit extreme.. At that low number of users, RAID5 or RAID1 will do just fine. If you have enough drives and enough room on your RAID card, a RAID10 would be faster, but not necessary.

  10. #10
    dave_kempe is offline Partner (VAR/HSP)
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    RAID10 is the way to go - with large drives RAID5 suffers from the chance of complete data loss, as the MTBF difference between the drives can fall inside the resync time too easily.
    http://www.solutionsfirst.com.au/hosting/zimbra/
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