you can use ghost to mirror your data drives but the sql won’t run on workstation addition and limits you to 10 connections. you can use in an emergency, but you could also back up to nas and access the data the same way. buy a second server and cluster them, then if one fails the other takes over the load. you need win2k advanced server to cluster them though.
EMC actually has integrated its product NetWorker with a BMR product, IndigoStone. It works well for all scenarios. Must be good for you too.