Suppose youve been asked to evaluate the performance of a mechanical disk drive (HDD) with the following specifications:

1. How much data (in bytes) can be accessed without repositioning the read heads? What is the average time to read or write a single sector?

2. Suppose an I/O system with a single disk of this specification at equilibrium receives 10 I/O requests per second such that each request reads or writes a single sector. What is the utilization of the I/O system? What is the average response time for a disk request, including the queuing time and disk service time?