🚀 go-pugleaf

In article <omlet.309a043fwn@news1.wolfe.net> proverbs@wolfenet.com (Chris Pirih) writes:

  fishman@panix.com (Harvey Fishman) wrote:
  | The capability that generally causes a drive to use lots of power and thus
  | run hot is NOT spindle speed.  It is track-to-track seek.  It takes POWER
  | to accelerate the mass of the head assembly from rest and to decelerate it
  | back to rest and do both FAST.  

  Do you have any evidence that seeking generates more heat than spinning?
  Your reasoning seems sound, but my informal "finger testing" contradicts
  it.  All the disk drives I have are the same temperature whether they're
  idle or in heavy use, and among contemporaries the faster the spindle rate
  the higher the temperature.   (The older 5" 3600 RPM drives are hotter,
  but that's probably because the platters are larger and heavier, and put
  more weight on the spindle bearings.)

The published specifications for most drives show a higher power
consumption while seeking than while just spinning or doing read/write
operations.  Higher power means the drive has to dissipate the energy as
heat.  Still, 7200rpm drives generally have higher power consumption than
5400rpm drives, largely due to energy dissipation through friction, I
expect.

		Leonard