I have a single server with dual quad core processors and 8 gigs of RAM. I plan to install Windows Server 2008 with Hyper-V on the box. I plan to make the host OS a Domain Controller and host Exchange Server for a small number of people. I plan to put a web presence on a Virtual Gues and any other applications on a second guest.
My question is, with only 150 gigs mirrored hard drive space (on 15,000 RPM SAS drives) how much of that space should be dedicated to the host OS (running Exchange and doing DC Authentication for 10-15 people) and how much should be dedicated for a web presense (IIS, OWA, and Sharepoint) and how much for other apps (Backups, Print Server, etc)?
I know this scenario might not be ideal, but it's what I have to work with. Any suggestions would be great.