I can't find the information I need here. I already looked at this guide and it does have a lot of information but it doesn't tell me specifically what I need to backup for exchange restore. The closest thing I could find was under the Exchange Agent link:

1. Perform a full backup of the Exchange Server. Include all drives and special objects as necessary. Repeat after any configuration changes are made to the server.

But this is very vauge and makes me think all Exchange files need to be backed up. But I have read lots of other posts that all I need is the information store. To put my mind at ease though I have been looking for a list of things that are included in the information store without any luck. I have no doubt that I can install a fresh copy of exchange and then restore the information store and I will have mailboxes but what about all my custom settings? Are those included in the information store or do I need to backup a config file somewhere or document them and set them again manually?

Excellent, thank you very much.