申論題

12. (5 points) Continuing from the last question, please answer which of the following statements is/are correct. Suppose that our server farm can dissipate a maximum of 300 W per square foot and a server rack requires 1I square feet (including front and back clearance).

(a) A cooling door for a rack costs $6000 and dissipates 16 KW (into the room; additional cost is required to get it out of the room). The servers are all with a P1 processor, an MI DRAM, and two D1 hard drives with RAID 1. In the farm, a single rack can host up to 28 servers.