Answer
The disk will make 50 revolutions in one second, meaning that 800 sectors will pass under the read/write head in a second. Because each sector contains 1024 bytes, bits will pass under the read/write head at approximately 6.5 Mbps. Thus communication between the controller and the disk drive will have to be at least this fast if the controller is going to keep up with the data being read from the disk.
Work Step by Step
The disk will make 50 revolutions in one second, meaning that 800 sectors will pass under the read/write head in a second. Because each sector contains 1024 bytes, bits will pass under the read/write head at approximately 6.5 Mbps. Thus communication between the controller and the disk drive will have to be at least this fast if the controller is going to keep up with the data being read from the disk.
