How to backup Exchange with Backup Exec and send the result with slow internet connection

Win 2003 server running Exchange 2003. Backup is taken with Backup Exec.

The company is quite small. so a full backup of Exchange is just around 11 GB in size.

I need, on a regular basis, to send the backup files to a remote location, using a slow ADSL-internet connection (around 1 MBit upload). Let say I will send the backup files every sunday. 11 GB with 1 MBit takes 30-35 hours, not acceptable.

So, my plan is to start with one full backup, and sending it to the remote location.
I then use the differential backup method in Backup Exec to create smaller files which will make it possible to send theese wuite small backup files maybe every night.

I simply wonder how long I can do this (of course the differential backup will grow over time, but that is no problem), before I have to take a new full backup.
My concern is that I have never really restored a complete Exchange server using a full backup together with latest differential one. What is your opinion?
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Doing diff backup for exchange on daily basis is not good, as it would not remove logs after backup.A differential backup backs up only the log files but does not purge them. If you have enough space,then you can go ahead with Full and Diff.

Note : You cannot perform a differential backup when circular logging is enabled

In terms of restore, Differential restore would take less time compared to Incremental.
Martin_RadboAuthor Commented:
OK, but with a total of 14 GB data at the Exchange server, and not too much traffice to their few users, I doubt the log files will be very big. And yes, there are plenty of space for the moment.

So maybe my idea of full + diff backup jobs will work, if I repeat the full job with some intervals.

Regarding restore, I still wonder if there are any disadvantages with having a quite old full backup and only diff. for the rest. This scenario is mainly for use then a disaster has occured, so the need for restoring individual mailboxes and other "fine" stuff are not so big.
If I can simply reinstall, put both full and latest diff backup back at new server and do a restore with theese, that is good enough.

In terms of restore, Differential is always faster than Incremental.
In terms of backup, Differential is quicker than Full.

If you use differential backup, recovery process requires your most recent Full backup media and Most recent Differential media. So in this case you need only two tapes.

The only disadvantage of differential backup is, it doesn't backup database and doesn't purge the T logs after log backup. But you need Full to purge long in short intervals, says once is a week.  Which isn't good if space is a constraint.

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Martin_RadboAuthor Commented:
"The only disadvantage of differential backup is, it doesn't backup database"

THe importante thing is that I can get back everything with latest full + latest diff then a disaster hits us, and since that is possible with a slightly old database + a recent diff backup (log files) that will be fine.

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