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Using Impression to run incremental or differential archiving operations

This document is divided into the following sections:


Instructions

Impression supports incremental and differential backups through the use of the bookmark system. Incremental backups can be achieved by basing a new archive on the bookmark of the most recent 'full' run, followed by basing the next archive on the newly created 'incremental' bookmark. Differential archives are accomplished by consistently basing incremental archives on a previous 'full' bookmark. To run an incremental or differential archiving operation based on a previous bookmark, these are the steps to take:

  • Run a full or incremental backup of the folder you're planning on backing up incrementally.
  • Select the session bookmark from the bookmark list that corresponds to the backup on which you'd like to base your incremental/differential backup.
  • Once a bookmark is selected, click the 'Archive' button. On the archiving options sheet that's displayed next, click the 'Advanced options' disclosure triangle to show additional archiving options. Please then enable the option from within the 'Advanced options' section titled 'Consider only files modified after bookmark's date' (this option is only available if you're basing your current archiving operation on a bookmarked session).
  • The archiving operation will now run based on the previous date of the bookmark that is in use, and only files with modification dates after that of the chosen session will be selected for backup. All other files will be excluded from the archive.

Please note that files that have been moved, copied or uploaded into directories and that have a modification date previous to the bookmarked session that your archiving operation is being based on will not be included in the incremental operation that you're running.

In the future, a potential upgrade to Impression will base the archiving operation on both a list of previous files archived as well as the modification date of files, which would remedy this issue. Patronage helps Impression enjoy the benefit of the developer time it takes to provide feature additions - please consider registering if you'd like to see Impression grow.


Troubleshooting

There are no troubleshooting notes available at this time.

ImpsAnswer 004, last modified: 2006.02.06


© Copyright 1998-2006 Stephen W. Elliott, All rights reserved.