Home Office Server setup question: re Time Machine

I recently purchased a Mac Mini with OS X Server (10.6) for my home office. I also have an AEB.
I'm pondering two options for backing up via Time Machine
10.6 Server Managed Time Machine vs. AEB AirDisks
Option 1: Use AEB AirDisks and have all machines - including the server - backup to the time machine.
Option 2: Use Snow Leopard as the backup server. Connect the external drives to the Server and manage all backups there.
I'm thinking Option 2 because it coordinates with the Managed Workgroup and isn't using AirDisk access. But I'm not sure why I need to send all of the data through the server and impact its overall performance. Either way the traffic goes through the AEB so that's a moot point. And then again maybe the backup isn't a big deal for the server either.
Looking for recommendations.
FYI, my backup is a simple RAID 1 config.

I don;t believe TM will give you a complete backup of your server, as there are some files that change frequently, and some items that TM does not copy.
If you're looking for an automated solution, consider SuperDuper, CCC, or even an online service like Carbonite. There are other backup solutions as well if you google around but they may be overkill (and expensive) for your needs.

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