That's assuming your average user knows how to restore it. So take data from your backup assuming it's up to date. Copy it to the other computer. Run restore. Make it the main computer and reinstall AC with SQL. Share the folders and Change the path on all the computers to the new one. You might've left out the parts where most users don't have SQL installed on their other computers. You have to set that up too. That's also with all the sharing working right the first time. That's just for AC not including any other programs/shares that you might have.
Option B with RAID. Do nothing. Insert drive in slot when it arrives.