What's the differents between differential backups and incremental backups

Discussion in 'Backup Software' started by Michael Kicak, Dec 30, 2007.

  1. What's the differents between differential backups and incremental backups?
    I have Acronis True Image 11 and have chosen the differential backups after
    a Full image was taken. But it seems as if both do the same thing, I can't
    tell the difference between them.
    Thanks again in advance for any help on this subject...
    Mike...
     
    Michael Kicak, Dec 30, 2007
    #1
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  2. Michael Kicak

    Gerard Bok Guest

    A differential backup takes all files that changed after the last
    full backup.
    An incremental backup takes all files that changed after the last
    backup.

    So, if you run daily backups on a weekly schedule with a full
    backup on friday night, your differential backup will constist of
    monday's changes
    monday's changes + tuesday's changes
    monday's changes + tuesday's changes + wednesday's changes,
    etc.

    While incremental backups will consist of:
    monday's changes
    tuesday's changes
    wednesday's changes,
    etc.

    So, your incremental backups will be more compact, but you will
    need each and every incremental backup to restore.

    Differential backups take more storage medium and time. But you
    only need the last differential backup to restore.
    Apart from the full backup, that is. In both cases :)

    Seasonal greeting: "that you may never _need_ your backup" :)
     
    Gerard Bok, Dec 30, 2007
    #2
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