Page 1 of 2 12 LastLast
Results 1 to 10 of 14

Thread: Help with RAID setup

  1. #1
    Join Date
    Aug 2009
    Location
    Makati City, Philippines
    Beans
    1,725
    Distro
    Xubuntu 14.04 Trusty Tahr

    Help with RAID setup

    Hi all,

    I have an LSI MegaRAID controller and 12 HDDs that I want to setup for RAID 6.
    I'm not familiar on how to group the drives, is it 4 volume groups with 3 HDD each, or 3 volume groups with 4 HDD each? Not to mention 2x6 or 6x2 combinations. Or just one big volume group?

    I'm familiar with RAID 10 setups, I configure it with 2 volume groups and 6 drives each. But how do I group the drives for RAID 6?

    Thanks!
    You know what solved my problems? GOOGLE Searches!
    The best Ubuntu derivative: Linux Mint
    Relax. Head to the Community Cafe
    The Philippine Team

  2. #2
    Join Date
    Oct 2009
    Beans
    Hidden!
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Help with RAID setup

    Are you wanting to do one big RAID6 array or smaller RAID6 arrays?

    If you are going to use it like one huge disk, just add the drives to the array and you'll be good to go. The OS should see it as xx TB in size.
    Come to #ubuntuforums! We have cookies! | Basic Ubuntu Security Guide

    Tomorrow's an illusion and yesterday's a dream, today is a solution...

  3. #3
    Join Date
    Aug 2009
    Location
    Makati City, Philippines
    Beans
    1,725
    Distro
    Xubuntu 14.04 Trusty Tahr

    Re: Help with RAID setup

    That's what I'm not sure about, is it better to use one large disk or smaller arrays? We are going to use it for File Storage with NAS4Free as the OS.

    Will smaller arrays still work if two drives fail?
    You know what solved my problems? GOOGLE Searches!
    The best Ubuntu derivative: Linux Mint
    Relax. Head to the Community Cafe
    The Philippine Team

  4. #4
    Join Date
    Oct 2009
    Beans
    Hidden!
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Help with RAID setup

    I dunno. I've always done one huge array. With RAID6, you'll be protected from 2 drive failures, so I'd go with a 12 disk RAID 6 array and see what happens.
    Come to #ubuntuforums! We have cookies! | Basic Ubuntu Security Guide

    Tomorrow's an illusion and yesterday's a dream, today is a solution...

  5. #5
    Join Date
    Aug 2009
    Location
    Makati City, Philippines
    Beans
    1,725
    Distro
    Xubuntu 14.04 Trusty Tahr

    Re: Help with RAID setup

    Alright then, I'll go with one large array. Thanks
    You know what solved my problems? GOOGLE Searches!
    The best Ubuntu derivative: Linux Mint
    Relax. Head to the Community Cafe
    The Philippine Team

  6. #6
    Join Date
    Oct 2009
    Beans
    Hidden!
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Help with RAID setup

    Welcome.

    Let me know how you go about creating it cuz I'm going to be migrating my current RAID card to MegaRAID and have no idea what I'm doing.
    Come to #ubuntuforums! We have cookies! | Basic Ubuntu Security Guide

    Tomorrow's an illusion and yesterday's a dream, today is a solution...

  7. #7
    Join Date
    Jul 2010
    Location
    Michigan, USA
    Beans
    2,123
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Help with RAID setup

    NAS4Free's default filesystem is ZFS. With ZFS, hardware RAID controllers are about the last thing you want to use. It prevents ZFS from giving you almost all of it's good benefits. All you really need is a "dumb" HBA like the IBM m1015 or LSI 9211-8i in IT mode to hang your disks off of. For a simple fileserver, I would suggest one large RAID6 array (or raidz2 in ZFS speak).

  8. #8
    Join Date
    Jul 2010
    Location
    Michigan, USA
    Beans
    2,123
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Help with RAID setup

    Quote Originally Posted by CharlesA View Post
    Welcome.

    Let me know how you go about creating it cuz I'm going to be migrating my current RAID card to MegaRAID and have no idea what I'm doing.
    I know someone you could ask if you have any questions

  9. #9
    Join Date
    Oct 2009
    Beans
    Hidden!
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Help with RAID setup

    Quote Originally Posted by rubylaser View Post
    NAS4Free's default filesystem is ZFS. With ZFS, hardware RAID controllers are about the last thing you want to use. It prevents ZFS from giving you almost all of it's good benefits. All you really need is a "dumb" HBA like the IBM m1015 or LSI 9211-8i in IT mode to hang your disks off of. For a simple fileserver, I would suggest one large RAID6 array (or raidz2 in ZFS speak).
    I had no idea a file system would negate the benefit of using a hardware RAID card. *goes off to google*

    Quote Originally Posted by rubylaser View Post
    I know someone you could ask if you have any questions
    Lol. This is true.
    Come to #ubuntuforums! We have cookies! | Basic Ubuntu Security Guide

    Tomorrow's an illusion and yesterday's a dream, today is a solution...

  10. #10
    Join Date
    Jul 2010
    Location
    Michigan, USA
    Beans
    2,123
    Distro
    Ubuntu 14.04 Trusty Tahr

    Re: Help with RAID setup

    Quote Originally Posted by CharlesA View Post
    I had no idea a file system would negate the benefit of using a hardware RAID card. *goes off to google*
    The filesystem doesn't negate the benefit of hardware RAID. In the case of ZFS, the hardware RAID card prevents some ZFS's features from working. Here are a few from Wikipedia.

Page 1 of 2 12 LastLast

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •