🚀 go-pugleaf

I have heard two theories about one element that affects disk transfer
rate. Help me disect these and find which is true and which is false.
Of course I feel that there will be some cases where both are true and
both are false. So, based on that I will tell you that I am dealing 
with the HP97560 SCSI-2 disk drive.

Theory 1: 

A higher transfer rate will result when using the outer tracks. "outer"
is defined here as "tracks that are the greatest distance from the 
spindle". I.E., track numbering starting at zero.


Theory 2:

A higher transfer rate will result when using the inner tracks.
"inner" is defined here as "tracks that are the closest to the
spindle". I.E., track numbering starting at maximum track number and 
decreasing.

The main argument used in theory 1 has been: because the inner tracks
are physically smaller, the head must wait one or more rotations to
position at the beginning of the track. 

The main argument used in theory 2 has been the inverse of theory 1's
main argument. The head can position fast enough to read the next track
with minimal rotations, therefore because the tracks are physically 
smaller more can be read faster.

I am mainly concerned with reads, but the discussion on writes are welcome.

Of course I may totally misinformed. So pull back the blanket of 
discovery and let me peruse.

Thank you for all responses!

Cy
-- 
Cy Foughty 
Sequent Computer Systems, Dallas, TX  MaBell: 214.661.1900
cyf@sequent.com
Standard disclosure: This is my opinion and not Sequent's.