Epson LT-286e User Manual

DIAG displays the following messages after you specify the hard

disk parameters:

W A R N I N G

All data on Hard disk you have

specified 

may be 

LOST...

Do you still want to continue (Y/N)?

Press 

Y 

and 

Enter 

to start analyzing the hard disk. Press 

N 

and

Enter 

to stop the operation.

This test checks the performance of your hard disk. It

determines the data transfer rate and track-to-track seek time
based on the transfer sire, seek count, and the amount of data

transferred.

The interleave factor is the most critical factor in determining

disk performance. Changing the interleave factor can drastically

change disk performance.

DIAG measures the data transfer rate in kilobytes per second.

To measure the data transfer rate, DIAG 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

DIAG 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.

System Diagnostics 27