[Ti] 60gb TravelStar - quick question

[Sherman Gregory]

At 12:12 PM -0700 1/14/03, Sam Hotchkiss wrote:
>On 1/14/03 12:00 PM, "Sherman Gregory" <sherman at qualcomm.com> wrote:
>
>>
>> I am assuming that the media area on each of these is the same, and that the
>> larger drive has a higher bit density.
>
>The 60gb 4800 rpm only has 2 platters, while the 5400 has 3
>

OK, now we are getting somewhere.  So Luke and I had both assumed that the street was the same length, but according to this, the 5400RPM drive has 1.5 miles to travel (ref: Luke's post).

So for two drives of the same capacity, one at 5400RPM and 3 platters, and the other 4200RPM and two platters, the 4200PM Drive is

         4200
         ----
          2
     ------------ = 1.167  times as fast.
         5400
         ----
          3


Does anyone know what make and model of 60GB drive Apple is putting in the AlBooks?  The specs don't match what I can find for IBM/Hatachi Travelstar drives.

BTW, the data sheet for the Travelstar model 60GH says it has 4 "Disks".  If the 4200RPM drive really only has 2, then it may be 1.56 times faster than the 60GH.

    Sherman