am getting new server with 2 (73GB) hard drives i need to know the following:
73G is way too small. WHy even bother, when you can get a decent drive for the same price most likely.
If your thought is to make it so that you can simply swap out the drives, don't even think about it, not going to happen. You still have to account for mail, mysql, passwords, dns, etc, all of which is pretty much stored everywhere.
If you've got your heart set on it, just put /home as the one drive alone.
not really any difference at all.
Typically, the second drive should be used for backups and unmounted when not in use, but if you're going to do things one way, then, you're fine.
Seriously, you don't want to stop with 70G drives. That will put some pretty serious limits on things. Most DC's will upgrade those reasonably cheap, and if you're building your own, you can always go through someplace like Newegg to get a larger, decently performing drive close to, if not exactly the same price,