Two disk drives have the following characteristics.

Characteristic	Disk Drive A	Disk Drive B
Surfaces	4	5
Tracks per surface	1,024	1,024
Sectors per track	128	256
Bytes per sector	512	512
Seek time	5 ms	8 ms
Rotation speed	5,000 rpm	7,500 rpm

For each disk drive calculate the disk capacity and the access time. Use half a revolution when calculating the average rotational delay. show all work.

Disk capacity

Access time

Which disk is faster? Explain your answer.