Dumb Question (possibly) about Cloning and Imaging Disks

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  1. Posts : 2,624
    trying to install win10
       #11

    Casper is pretty good for cloning, from what I have heard.
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  2. Posts : 1,867
    Windows 10 Pro 2004 20H1
       #12

    Pacman23 said:
    I backup my laptop by incremental clones
    There is no such thing as an incremental "clone".

    Clone and image often are incorrectly interchanged.

    A "clone" is an exact copy of a hard drive that is bootable.

    Only one clone can exist on a drive.

    You would have to have multiple drives to store multiple clones.

    An "image" is an exact copy of a hard drive that is stored in a file.

    It is not bootable, and multiple images can be stored on a drive.

    Macrium Reflect Free has both functions.
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  3. Posts : 2,624
    trying to install win10
       #13

    If I remember correctly, Casper can clone only the changes, various scientific/radiology labs, etc use it, I believe.
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  4. Posts : 122
    Windows 10 Pro x64 Version 21H2 Build 19044.1766
       #14

    Perhaps the terminology is wrong but Casper will allow you to update your bootable clone with only changes since you last performed it. Works a treat and very quickly.
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  5. Posts : 1,867
    Windows 10 Pro 2004 20H1
       #15

    Regardless what Casper calls it, this is not incremental "cloning" -

    SmartClone™ Technology Brief | Tehnology Innovations | Future Systems Solutions (spelling is theirs).

    It's simply doing a diff of two drives and updating Drive B with the changes in Drive A.

    An "incremental" backup only backs up changes since the previous backup.

    It makes backup times faster, but restores more complex.

    If you need to restore your entire hard drive, you start with the full image, and then each incremental backup, in order, to be current...or until you reach a point you want to return to.

    It would also be a security disaster to keep a clone, or external backup, connected at all times.

    If ransomware infects your system, it eats your hard drive, clone, and external backups.
    Last edited by OldNavyGuy; 31 Jul 2020 at 17:22.
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  6. Posts : 122
    Windows 10 Pro x64 Version 21H2 Build 19044.1766
       #16

    Yes, I totally understand the dangers of having a USB backup permanently connected, that's why I was at pains to say that I don't do it. I've a couple of friends with Macs who can't be dissuaded from leaving their Time Machine drives permanently connected to their computers.
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  7. Posts : 1,867
    Windows 10 Pro 2004 20H1
       #17

    Pacman23 said:
    Yes, I totally understand the dangers of having a USB backup permanently connected, that's why I was at pains to say that I don't do it.
    Unfortunately, many do.

    I've seen some backup to a different partition...on the same drive.

    Sometimes, it's just as important for users to know what not to do, as it is what to do.
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  8. Posts : 13,689
    Windows10
       #18

    OldNavyGuy said:
    There is no such thing as an incremental "clone".
    This not true.

    Macrium Reflect paid versions have a feature called Rapid Delta Clone which does an incremental clone i.e. it compares the target installation with the source installation and only clones the differences.

    It is awesomely fast if the target drive is only slightly different to the source.
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  9. Posts : 1,867
    Windows 10 Pro 2004 20H1
       #19

    cereberus said:
    This not true.

    Macrium Reflect paid versions have a feature called Rapid Delta Clone which does an incremental clone i.e. it compares the target installation with the source installation and only clones the differences.

    It is awesomely fast if the target drive is only slightly different to the source.
    Which is not "cloning".

    It's the same thing that Casper does, which is a diff of the drives and updating Drive B with the changes in Drive A
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  10. Posts : 13,689
    Windows10
       #20

    OldNavyGuy said:
    Which is not "cloning".





    It's the same thing that Casper does, which is a diff of the drives and updating Drive B with the changes in Drive A
    Of course it is cloning. RDC is the default cloning mechanism. If the target is empty, everything is cloned. If not empty, it does it by difference.
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