X= 3

Y=2

Z=2

Question 2 (a) A system designer has decided to incorporate a magnetic disk drive which has 8 surfaces, 512 tracks per surface, and 64 sectors per track. Sector size is 1 KB. The average seek time is 1+X ms, the track-to-track access time is 1 ms, and the drive rotates at 60 YZ rpm. The disk is designed such that successive tracks in a cylinder can be read without head movement. (i) Assuming every file is stored in successive sectors. Determine the performance in terms of average access time (in ms). (4 marks) (ii) Determine the performance in terms of time required to transfer a X MB file (in ms). (7 marks) (iii) Determine the performance of the disk drive in terms of the possible burst transfer rate (in MB/s). (4 marks) (b) A non-pipelined processor has a clock rate of 2.YZ GHz and an average CPI (cycles per instruction) of 4. An upgrade to the processor introduces a five- stage pipeline. However, due to internal pipeline delays, such as latch delay, the clock rate of the new processor has to be reduced to 2 GHz. (i) Analyze the speedup that can be achieved for a typical program of 100 instructions. (5 marks) Analyze the MIPS rate for both the original and the upgraded processor if the instruction set is not optimized. (5 marks) (ii)