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Performance Test
This test checks the performance of your hard disk by
determining the data transfer rate and track-to-track seek
time based on the transfer size, the seek count, and the
amount of data transferred.
The program measures the data transfer rate in kilobytes per
second. It reads 64KB of data 15 times and counts the
number of timer ticks using this formula:
Transfer rate = (64KB x 15 x 18.2) / # timer ticks
The program measures track-to-track seek time in
milliseconds using this formula:
Seek time = (# timer ticks x 1000) / 18.2 x 200
(The number of seeks is 200.)
A higher data transfer rate and a lower seek time indicate
better disk performance.
Seek Test
This test checks the seek capability of the hard disk on the
specified range of cylinders and heads. The program performs
a series of sequential seeks followed by random seeks and
reports any errors.
Read/Verify Test
This test checks the read and verify capability of the hard
disk on the specified range of cylinders and heads. The
program performs both sequential and random read and
verify operations and reports any errors.
B-18
Performing System Diagnostics