I recently visited a customer who expressed their need to as little as possible downtime in the event of a disaster.
They mentioned that if their SQL server did fail during business hours, it was important to be able to continue operating as soon as possible.
I mentioned the ability of SQL Server to be configured in a failover cluster, and floated the idea. They seemed interested, despite the obvious costs of an additional server and possibly SQL licence.
Now (I'm being lazy here), what do you need to setup a failover cluster - what edition of Windows Server and SQL Server do you need ?
Anyone got any experience with this ? You can post here, or if more appropriate PM me and I can connect you with the JSP managing the site.