Backup strategies

    Whether you need to save all files on a volume, all files in a
    directory tree, or a group of files from one or more locations,
    BACKUP Manager offers two strategies for backing up your files:

    ·  Snapshot backup strategy - each time you backup your files, all of
       the files are placed in a save set, and the new save set supersedes
       any previously created save set for the same directories.

    ·  Incremental backup strategy - first you create a baseline save set
       that contains of all your files, then during subsequent backups you
       create incremental save sets to save files that have been added or
       changed.  Together the baseline plus all of the incremental save
       sets represent the current state of your directories.

    To implement the snapshot backup strategy simply use the Snapshot
    backup operation from the "Save Volume ..." or the "Save Selected
    Files ..." submenu each time you backup your files.

    To implement the incremental backup strategy, first use the Baseline
    backup operation from the "Save Volume ..." or the "Save Selected
    Files ..." submenu.  Then on subsequent backups choose the Incremental
    backup operation to save the files that are new or have been changed
    since the last baseline or incremental backup was performed.

    When you choose a backup strategy, you determine what you want to
    back up and how often you want to do it.  Your backup strategy
    depends on the following factors:

    ·  The number and size of disks or tapes you can devote to backups
    ·  The importance of the data
    ·  How often the data changes

    For example, if you have a standalone workstation in a "mission-
    critical" environment and many files are updated each day, you might
    want to perform a nightly snapshot backup of all of your files.
    However, if you modify only a few files during the course of your
    work day (or week), a daily (or weekly) incremental backup to capture
    the changes might be a more efficient method, because it takes less
    time to perform an incremental backup.  With either strategy all of
    your files are protected, but it usually takes longer to restore files
    using the incremental method because more save sets are processed.

    With either strategy, if unexpected data loss occurs (for example, a
    disk is damaged or you accidently delete one or more files) you have
    the option of restoring all saved files, or selecting which files to
    restore.  If you have been performing snapshot backups, then you use
    the most recent save set.  However, if you have a combination of
    baseline and incremental backup save sets, restore files from the
    baseline saveset first, then restore files from the incremental save
    sets next.  Note that restoring incremental backups in reverse
    chronological order is more efficient that proceeding in chronological
    order.  For more information, see "Recovering data with multiple
    backup strategies" in the "Tasks ..." help topic.