apples & oranges, or a taxicab and a pc..
-
re: power management and harddrives
-
... set my harddrives [to] shut off after a certain time
... concern [to] prolong the life of the harddrives
-
Marty,
-
I have noticed that long haul truck drivers and hacks,
those with ownership of the rig or car, do not turn off
the engine during periods of times when they know
their vehicle will not be moving, and its legal and safe
to allow the engine to run while not occupied.
-
The way it was explained to me is that a running engine,
having clean and correct oil type and amount, during idle
with no load, has near zero touching(friction) between parts
if the engine parts themselves that make contact with other
engine parts were not damaged but smooth and correctly fitted,
that this engine could run forever without accuring any damage.
-
My wandering in truck stops has observed that diesel engines
have another type problem when idled for long periods that then
requires an expensive engine overhaul. Some kind of build up.
-
Seems that the starting of these types of engines is where
the wear & tear occurs during that initial period that the only
oil between parts is that left over film after last turn off,
and until the pump gets the pressure up and the oil flowing
there is not enough oil between moving parts to keep metal
from not touching metal. Those folks that start a car
and as soon as the engine turns over engages the drivetrain
can accumulate in one second 100,000 miles of driving
non stop from Earth to planet Mars :o)
-
starting friction is a different beast than moving friction
-
If the harddrive is not lubricated with oil, but a solid material
between metal parts, there still may be less wear & tear
letting the harddrive spin all day non stop versus it stopping
after an idle period to save battery juice or conserve energy.
-
Sure would be nice if anyone here has experience or eductaion
in the material sciences etc.
-
But then maybe its all old wives tales I have learned.
Doug |
