As important as backup is, it is something I feel very incompetent about.
On a desktop, all kinds of settings are stored all over the place - in the HIDDEN local settings/apps folder, apps store their data in their program files\app folder (rather than my docs), etc...
and on the server you want to keep the system state, etc.... not just backup the shared data folders, right?
And then the idea of rotating external hard drives offsite vs. offsite storage over the web (can I assume tape for new installs is a non-issue?)
And full vs. incremental vs. differential? Any rule of thumb as to how much storage you commit for backups? sure, some places have lots of data, but little changes, so incremental or differential would make more sense.
If a user says 'I used the file last about 2 months ago... and now it's not there', can you look back at versions back that far and in between that? or last used months ago?
and what app(s) do you use? sbs's included backup? That only keeps the last 10 logs.
So how do YOU do backups? how many versions do you keep? etc., etc.