Genixia's got a point.

The online backup site doesn't necessarily need to copy all 2 gigs every night. If the changed data is in a bunch of small files (instead of one huge database file), then you actually only need to back up what's changed, and 384k might be PLENTY for that.

I personally do my backups as a full file-by-file backup every night because I can. It means that in order to get the latest file backup, I need only one good tape out of all the grandfathered copies rather than having to worry about "delta" tapes. And it allows me to go back to any one date within the last few weeks (or a more fuzzy date from within the last year) and pull any version of any file without having to fish through file-change records.

But if you're using an online backup/mirror, then that trickle strategy makes more sense.