The way I understand it is this......
A Full Backup contains all data.
Incremental backup contains only the changes since the last backup session (wether full or incremental) - you must save the latest FULL and ALL incremental backups since the last full session as each incremental is just a link in the chain.
Differential Backup - contains all changes since the LAST FULL backup - so only the latest FULL backup AND latest DIFFERERENTIAL is needed note: you couldn't use the lastest differential with the original full IF you had done a full backup at a later date....know what I mean
Now all that said, I don't fully want to take the risk of losing my data. I have only done full backups and I keep the original (not sure why as I have restore disks but I do) and I keep the last two or three full backups (which I do about each week). I also seperately backup My docs which includes my music, pictures etc. I have a dedicated external hard drive for my backups
from the horses mouth........http://www.acronis.com/homecomputing/products/trueimage/
the user guide is middle right on the page........
Edited by mightyvh, 06 May 2007 - 05:36 PM.