A disk unit has 24 recording surfaces. It has a total of 14000 cylinders. There is an average of 400 sectors per track. Each sector contains 512 bytes of data. What is the data transfer rate at a rotational speed of 7200 r.p.m?

A disk unit has 24 recording surfaces. It has a total of 14000 cylinde

1.	A disk unit has 24 recording surfaces. It has a total of 14000 cylinders. There is an average of 400 sectors per track. Each sector contains 512 bytes of data. What is the data transfer rate at a rotational speed of 7200 r.p.m?
A.	68.80 × 106 bytes/s
B.	24.58 × 106 bytes/s
C.	98.80 × 103 bytes/s
D.	24.58 × 103 bytes/s
Answer» C. 98.80 × 103 bytes/s