Hi there.
To answer your questions:
1) Yes, we can install a second drive and configure RAID 1.
2) We can do a load balanced 2 server config like this. The /home partition would mirror across both servers, and it can be configured so one is an "overflow" server to handle traffic that the first cannot handle. You would get 6,000 GB transfer with this setup.
3) We can do a 4 or more server cluster if you'd like. Unfortunately we cannot do RAID 5, as the servers cannot accept more than 2 disks. You would have 12,000 GB transfer with 3 large servers though.
I hope this answers your questions. If you have more, please feel free to ask here, or email us at
dedicated@lunarpages.com