Incremental backups are irrelevant to Entourage. Incremental backup means
that only changed files are backed up. It doesn't back up parts of files.
Since the Entourage database is one big file, and Entourage updates it every
time you send or receive mail, update your calendar, etc., your backup
software must backup the entire database if there has been even the smallest
change. There is no "increment" to backup. (Apple Mail on the other hand,
stores messages in individual files, so incremental backup works fine.)
I believe this is one of the main reasons that Diane recommends not using
Time Machine on the Entourage database. It can result in a lot of storageon
your backup drive, and if Entourage has not flushed the entire DB to disk
before you backup, then the saved DB may not be usable. That's why it is
smarter to quit Entourage before backing up.
Incremental backups are far from irrelevant to Entourage and are very
important but not just to Entourage. If it is a daily backup, the
identity is backed up that day in time till the point that you rotate
the backup. So say last nights backup is bad, just go back to the
backup from the day before and restore, in the case of Entourage, that
day's identity. Data Backup and Retrospect provide this capability. I
have these set to store my backups 14 days back. So I can go back 14
days and restore a database that was created that far back. What's
missing of course is the information created from that point forward.
I know there is this debate about not using Time Machine but I use it
all the time and have never had a problem with a restore. So, if an
Entourage DB corrupts at say 10 pm I'll just restore the most recent
DB so as not to loose too much data.
I never found this to be much of an issue with 2004 and rarely ever
had the DB corrupt and in fact I don't recall in 5 years of use this
happening. In fact, I don't recall ever looking for tech support with
it. I sure never read this forum or any other forum with respect to
Entourage 2004. That changed with 2008.
I have zero problems with Outlook and never have technical questions
anywhere with this. Everything in my Windows environment is also
extensively backed up but the only time I ever need to rely on a
backup is if I accidentally delete something. Maybe I'm just lucky. I
just wish Microsoft could get Entourage solid. I think we've got quite
a wait for that.