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*nix Thread, NAS OS + Encryption in Technical; Which OS would you use for a NAS? Do any nix support encryption of the Data?...
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    nicholab's Avatar
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    NAS OS + Encryption

    Which OS would you use for a NAS? Do any nix support encryption of the Data?
    Last edited by nicholab; 7th November 2012 at 03:40 PM.

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    Probably some form of Linux or BSD.
    All of them, depending on how you've setup your drives.

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    Quote Originally Posted by nicholab View Post
    Which OS would you use for a NAS?
    FreeNAS - every feature you get from a specialised NAS device, plus block-level deduplication if you use a machine with enough (8GB) of RAM.

    Do any nix support encryption of the Data?
    I'm sure FreeNAS does, although I haven't had occasion to use it. On Linux, you'd use something that encrypted block devices and re-exposed them as block devices again, so your encryption would just slot in with whatever else you are using. So, for instance, you might have several physical disks (/dev/sda, /dev/sdb, /dev/sdc) combined into a MD RAID array (/dev/md0) which you might then encrypt (/dev/cr0) and then mirror to another machine (/dev/drbd1) before you actually format and mount the final resultant block device (i.e. do mkefs of /dev/drbd1 and mount it somewhere like /mnt/data).

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    Your downside to encrypting is you either need to:

    a) login and mount the volume by supplying a passphrase upon reboot.
    b) provide a means for the server to mount the encrypted volume automatically (that wouldn't be effective if it got stolen, for example).

    We went with a) on both a QNAP (custom Linux) and a standard server running Ubuntu 10.04 and encrypted LVM.

    Also remember the files are only encrypted when the volume isn't mounted.
    Last edited by pete; 7th November 2012 at 04:38 PM.



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