Incremental or Differential Backup?

Discussion in 'Acronis True Image Product Line' started by alloucho, May 30, 2008.

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  1. alloucho

    alloucho Registered Member

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    What´s the difference between these two types of Backups?
    I have a full backup of HD C: normal compression, size: 3.5 gb.
    I tried to take a new backup with new installed software. acronis recommends to do an incremental backup with less space. Now the new backup file taken is about 4 gb:eek:
    now i have two image files: the original with 3.5 gb and the supposed incremental one with 4 gbo_O
    Is this the right way how acronis works?
     
  2. MudCrab

    MudCrab Imaging Specialist

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    An Incremental backup saves the changes from either the Full or last Incremental in the backup set. For example: Full >> Incremental 1 (based on the Full) >> Incremental 2 (based on Incremental 1) >> Incremental 3 (based on Incremental 2), etc.

    A Differential backup saves the changes from the Full image. For example: Full >> Differential 1 (based on the full) >> Differential 2 (based on the Full) >> Differential 3 (based on the full), etc.

    Incrementals and Differentials can both be as large or larger than a Full if things have changed a lot on the drive since the "base" images were created. A disk defrag or a TI restore can do this. In those cases, it's best to just create another Full image backup.
     
  3. demoneye

    demoneye Registered Member

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    are u sure defrag also effect Incrementals backup size??

    for Differentials backup i can 100% confirm for the Incrementals i didnt check

    chers:cautious:
     
  4. TheWeaz

    TheWeaz Registered Member

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    "are u sure defrag also effect Incrementals backup size??"

    Yes.
     
  5. demoneye

    demoneye Registered Member

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    Ok 10x... so we keep STICK HARD to FDISR
     
  6. TheWeaz

    TheWeaz Registered Member

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    OK, I admit it - I have no idea what that's supposed to mean.
     
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