Creating RAID 1 array without destroting data

Discussion in 'PC Technical Talk' started by Isis, May 28, 2014.

  1. Isis

    Isis Guest

    I have an ASROCK H77 PRO4/MVP motherboard, I have an existing Samsung 2TB
    drive with data and a second identical drive that I would like to use as a
    mirror in RAID1 configuration - I plugged both drives into the RAID SATA
    sockets and changed the SATA option in the bios to RAID, I could then enter
    the BIOS using the CTRL+I option and specify RAID1 config but it gives a
    warning before proceeding to create the RAID1 saying that all data on the
    drives will be destroyed so I backed out - many people have told me that this
    is possible but I am not sure if and how !

    Any help appreciated,

    Isis, May 28, 2014
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  2. Isis

    Graham J Guest

    Almost certainly it will destroy the data to use the RAID controller.
    You will have to re-install the OS - possibly with a different driver
    for the disk system.

    You **might** be able to convice the controller that the existing drive
    is one of a pair in RAID1 - where the other member of the pair has
    failed. Then tell it that you want to add a replacement for the failed
    member. That at least should be possible; but I have known the
    procedure to fail when the RAID has been set up correctly and a disk has
    failed ...

    I have made a mirror using the operating system whenthere has been no
    RAID controller
    Graham J, May 28, 2014
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  3. Isis

    Isis Guest

    Hi Graham,

    Thanks for the reply.

    At present the system is booted using a seperate 250GB SSD drive, so that
    is not an issue.

    When using the CTRL+I at boot time to get into the RAID utility - there
    does not seem to be a way of saying that the drive is a survivor from a
    RAID array and then adding a new drive. Any ideas of how that might be done

    Isis, May 28, 2014
  4. Isis

    Graham J Guest

    I suspect it will only show the "survivor" option if it really is a

    Given that this is simply storage, and the OS boots on another disk,
    then it's no trouble to archive all the data to a suitable spare disk,
    create the RAID array, and restore the data. Might take a good few
    hours, though ...
    Graham J, May 28, 2014
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