• The best piece of advice, go and get someone who knows what they're doing. You go past about 2-3tb and the rules change pretty radically. It's not something you can approach lightly.

    In general, you need to have a great understanding of the business first. Then you can worry about the technical aspects of setting up a DR plan for them.

    But there's no way to even make suggestions based on what you've told us. As for tempdb, I'd suggest having a read through on several articles over at sqlskills.com. They've got some very good information on how to configure it correctly.

    "The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood"
    - Theodore Roosevelt

    Author of:
    SQL Server Execution Plans
    SQL Server Query Performance Tuning