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Thread: Maximum partition size in Ubuntu server 12.04

  1. #1
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    Question Maximum partition size in Ubuntu server 12.04

    Hi. Complete Ubuntu and Linux n00b here. I am in the process of building a file server for my media collection. I have bought a HP ProLiant Microserver, and want to configure it as follows: 1 x 250 GB HDD for OS + 4 x ? TB HDDs for content, using SnapRAID to build in redundancy for the content. I am more familiar with Windows, but its sys req's are a joke compared to Ubuntu. I have downloaded Ubuntu server and messed around with it in a VM, and would like to use that as the OS and ext4 as the FS.

    So here's the question: should I buy 4 x 2 TB drives, or 4 x 3 TB drives? Obviously 3 TB is preferable, but I have read some old (2007/2008) literature that says the maximum supported partition is 2 TB. Yes, I could split the 3 TB disks into two partitions of 1.5 TB each, but I am concerned that SnapRAID will use a partition to create parity for another partition on the same physical disk. I would prefer to have a single partition per physical disk.

    Obviously Ubuntu has developed a lot since 2007/2008, so I would assume the maximum supported partition size has increased, but I can't find anything to prove this.

    I'd really appreciate it if someone could confirm that I can create a 3 TB partition before I go out and buy the disks. Even better, if someone has it running in production with SnapRAID!

  2. #2
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    Re: Maximum partition size in Ubuntu server 12.04

    Quote Originally Posted by rossj81 View Post
    Hi. Complete Ubuntu and Linux n00b here. I am in the process of building a file server for my media collection. I have bought a HP ProLiant Microserver, and want to configure it as follows: 1 x 250 GB HDD for OS + 4 x ? TB HDDs for content, using SnapRAID to build in redundancy for the content. I am more familiar with Windows, but its sys req's are a joke compared to Ubuntu. I have downloaded Ubuntu server and messed around with it in a VM, and would like to use that as the OS and ext4 as the FS.

    So here's the question: should I buy 4 x 2 TB drives, or 4 x 3 TB drives? Obviously 3 TB is preferable, but I have read some old (2007/2008) literature that says the maximum supported partition is 2 TB. Yes, I could split the 3 TB disks into two partitions of 1.5 TB each, but I am concerned that SnapRAID will use a partition to create parity for another partition on the same physical disk. I would prefer to have a single partition per physical disk.

    Obviously Ubuntu has developed a lot since 2007/2008, so I would assume the maximum supported partition size has increased, but I can't find anything to prove this.

    I'd really appreciate it if someone could confirm that I can create a 3 TB partition before I go out and buy the disks. Even better, if someone has it running in production with SnapRAID!
    Well, I think now it can support 3TB. Even Windows 8 can now support 1024TB. Shouldn't be difficult.

  3. #3
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    Re: Maximum partition size in Ubuntu server 12.04

    I agree, it should, but I'd like either documented proof or actual experience before I spend $560 on new disks...

  4. #4
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    Re: Maximum partition size in Ubuntu server 12.04


  5. #5
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    Re: Maximum partition size in Ubuntu server 12.04

    That's just what I was looking for, thank you.

  6. #6
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    Re: Maximum partition size in Ubuntu server 12.04

    Hi,

    Linux supports gpt partitions that can be larger than 2Tb.
    The old partition table (msdos) only supports max 2Tb.
    Linux can create a file system on a raw drive (no partition needed)

    The only problem is that the BIOS also needs to support >2Tb drives.

    So you could use 3Tb drives if your BIOS supports them, but I would recommand buying 2Tb drives just get enough

    Regards
    Ian Dobson
    Walking on water and writing software to specification is easy if they're frozen.

    My corner of the internet http://www.planet-ian.com

  7. #7
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    Re: Maximum partition size in Ubuntu server 12.04

    Just use GPT partition tables and you will be fine.

    I've got a 4TB partition on my 12.04 server and I've seen RAID arrays much larger than that.
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  8. #8
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    Re: Maximum partition size in Ubuntu server 12.04

    Quote Originally Posted by ian dobson View Post
    Hi,
    So you could use 3Tb drives if your BIOS supports them, but I would recommand buying 2Tb drives just get enough
    Ooops, too late. Ordered the first of the 3 TBs on Friday

  9. #9
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    Re: Maximum partition size in Ubuntu server 12.04

    Quote Originally Posted by CharlesA View Post
    Just use GPT partition tables and you will be fine.

    I've got a 4TB partition on my 12.04 server and I've seen RAID arrays much larger than that.
    Awesome, thanks. I let you know how it goes.

  10. #10
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    Re: Maximum partition size in Ubuntu server 12.04

    Quote Originally Posted by rossj81 View Post
    Ooops, too late. Ordered the first of the 3 TBs on Friday
    For what it's worth, I've been using 3TB USB3 drives to backup my data since I had my old server with a USB3 card. No problems at all.

    However, I haven't quite moved to using 3TB drives in my RAID, but I don't think there should be any problems.
    Last edited by CharlesA; August 19th, 2012 at 04:12 PM.
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