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Convert Single Disk To Two Disk Raid 1

Discussion in 'Windows XP' started by Abby Brown, Sep 9, 2010.

  1. Abby Brown

    Abby Brown Flightless Bird

    Hi,

    Is it possible to convert a single disk system to a two disk
    Raid 1 without losing the contents of the original disk? I
    would like to just install the second disk, run a utility, and
    have the original disk copied.

    Thanks,
    Gary
     
  2. Pegasus [MVP]

    Pegasus [MVP] Flightless Bird

    "Abby Brown" <abbybrown@charter.net> wrote in message
    news:uGxV5#CULHA.4576@TK2MSFTNGP04.phx.gbl...
    > Hi,
    >
    > Is it possible to convert a single disk system to a two disk Raid 1
    > without losing the contents of the original disk? I would like to just
    > install the second disk, run a utility, and have the original disk copied.
    >
    > Thanks,
    > Gary
    >


    When you set up a RAID array with Windows then you need to click the two
    disks while in Disk Manager to start the process. This is non-destructive
    for the first disk.

    Note also that creating a two-disk RAID array is in most cases a waste of
    resources. Disk failures are rare these days. The vast majority of PC
    problems relate to damaged Windows installations, viruses, malware, user
    error, file system problems, theft and physical damage. A RAID array will
    give you no protection against any of these events. You would get far better
    protection if you set up a decent backup scheme, using your second disk as
    an external storage unit. Installing a partition image program such as
    Acronis True Image and creating/maintaining an image of your System
    partition would also be an excellent idea. 90% of all problems posted in
    this forum could be solved by restoring an image . . .
     
  3. Ken Blake, MVP

    Ken Blake, MVP Flightless Bird

    On Thu, 9 Sep 2010 11:00:18 -0400, "Abby Brown"
    <abbybrown@charter.net> wrote:


    > Is it possible to convert a single disk system to a two disk
    > Raid 1 without losing the contents of the original disk? I
    > would like to just install the second disk, run a utility, and
    > have the original disk copied.



    RAID 1 (mirroring) is almost always a mistake for home computer users.
    RAID 1 (mirroring) is *not* a backup solution. RAID 1 uses two or
    more drives, each a duplicate of the others, to provide redundancy,
    not backup. It's used in situations (almost always within
    corporations, not in homes) where any downtown can't be tolerated,
    because the way it works is that if one drive fails the other takes
    over seamlessly. Although some people thing of RAID 1 as a backup
    technique, that is *not* what it is, since it's subject to
    simultaneous loss of the original and the mirror to many of the most
    common dangers threatening your data--severe power glitches, nearby
    lightning strikes, virus attacks, theft of the computer, etc. Most
    companies that use RAID 1 also have a strong external backup plan in
    place.

    "Why RAID is (usually) a Terrible Idea"
    http://www.pugetsystems.com/articles?&id=29


    --
    Ken Blake, Microsoft MVP (Windows Desktop Experience) since 2003
    Please Reply to the Newsgroup
     
  4. Abby Brown

    Abby Brown Flightless Bird

    "Pegasus [MVP]" <news@microsoft.com> wrote in message
    news:uiCOXaDULHA.2068@TK2MSFTNGP05.phx.gbl...
    >
    >
    > "Abby Brown" <abbybrown@charter.net> wrote in message
    > news:uGxV5#CULHA.4576@TK2MSFTNGP04.phx.gbl...
    >> Hi,
    >>
    >> Is it possible to convert a single disk system to a two disk
    >> Raid 1 without losing the contents of the original disk? I
    >> would like to just install the second disk, run a utility,
    >> and have the original disk copied.
    >>
    >> Thanks,
    >> Gary
    >>

    >
    > When you set up a RAID array with Windows then you need to
    > click the two disks while in Disk Manager to start the
    > process. This is non-destructive for the first disk.
    >
    > Note also that creating a two-disk RAID array is in most cases
    > a waste of resources. Disk failures are rare these days. The
    > vast majority of PC problems relate to damaged Windows
    > installations, viruses, malware, user error, file system
    > problems, theft and physical damage. A RAID array will give
    > you no protection against any of these events. You would get
    > far better protection if you set up a decent backup scheme,
    > using your second disk as an external storage unit. Installing
    > a partition image program such as Acronis True Image and
    > creating/maintaining an image of your System partition would
    > also be an excellent idea. 90% of all problems posted in this
    > forum could be solved by restoring an image . . .


    I was wondering about that. That will save me a disk.

    Thanks,
    Gary
     

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