(a) A hard disk is 2400 RPM and has 2 double-sided platters. Each surface has 100,000 tracks and 3000 sectors per track. (We assume that the number of sectors per track does not vary between the outer and inner area of the disk.) Each sector has 512 bytes. What is the capacity of the disk? What is the maximum rate at which data can be read from disk, assuming that we can only read data from one surface at a time? What is the average rotational latency?

(b) Suppose we have the same disk as in (a), where the average seek time (time for moving the read-write arm) is 5ms. How long does it take to read a file of size 40 KB? A file of 400 KB? A file of 4 MB? Use both the block model (4KB per block) and the latency/transfer-rate model, and compare.