Thanks for the reply.

The reason I brought up ntbackup, is because that is what I use to
backup our exchange store, and in reading the documentation for
ntbackup is where I learned normal vs diff vs incremental backups.

After thinking through it a little more,

I should be able to make
a full backup of exchange once a month,  (40 Gig)
a diff backup every day (size would grow each day by a few 100 megs)
and then an incremental backup once a week (should be about the same
size as the last diff backup)

If there is a crash mid month, I would have to restore the full
backup, all the weekly inc backups up to that day, then that days diff
backup.

These exchange backups will be dropped on to a backup drive in the
server, then I will have bacula backup the contents of that drive
(incremental only) to archive, and move the files off the server.

Any comments on this setup? I saw in the bacula wiki the option of
backing up and exchange store, I but I have done restores from
ntbackup backups before, and I feel safe with that setup. Also the
wiki didn't mention if it could do other backups other than full.

Thanks
Robin

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