I have a compaq proliant 1600 with 3 4.3 gig drives. I need more space. There is only space for 3 drives. My computer shows 2 drives of 4 gigs each. Disk administrator shows 2 drives of 4 gigs and an unactive drive of 36mb that has EISA utilities on it. What happened to the remaining space? How can I get the missing gigs back?