I have been reading various Q&A regarding backup of a SBS2003 server with Exchange, but am looking for a simple, straightforward strategy to implement with my SBS installation. Currently, I have SBS 2003 R2 running as my primary (and only server), with about 15 client users (various onsite and offsite workstations and laptops). The server is of course running AD. Exchange is also on the server. I am performing nightly full backus (they are not too big) to tape using Backup Exec 12.5. My question is - what is the best way to add a standby server hardware into the mix and how do I configure it to be a 'hot spare' (as in if the main server stops running, the backup can simply take over), or is this even feasible? I understand that this is a fairly large topic, so I am looking for the most reliable and simplest way to deal with a server failure.