題組內容

11. (5 points) One critical factor in powering a server farm is cooling.   If heat is not removed from the computer efficiently, the fans will blow hot air back onto the computer, not cold air.   We will look at how different design decisions affect the necessary cooling, and thus the price, of a system.   Please use the components and devices in the following for your power calculations.61e6570315497.jpg Please answer which of the following statements is/are correct.

(a) A cooling door for a rack costs $4000 and dissipates 16 KW (into the room; additional cost is required to get it out of the room). The cooling door can cool 223 servers with a P2 processor, an M2 DRAM, and a single D2 hard drive.