On Thu, Dec 23, 2010 at 01:29:14PM -0600, Stan Hoeppner wrote:
> Petre Rodan put forth on 12/23/2010 10:55 AM:
> > this hard drive has exceeded it's 300k load/unload maximum from the specs
> > in only 140 days, which means it was woken up every 30s or so. not
> > willingly.
> Contact WD and request a warranty replacement for the drive due to
> exceeding the spec'd cycle max in less than 6 months. They may not
> honor your request. Whether they do or not, I'd replace the drive as
> the mechanism obviously has too much wear on it already, and within one
> year of use will have well over double the spec'd cycles. If you
> replace it with another 20EARS, replace the firmware immediately as
> mentioned below to decrease the load/unload rate. (It would be nice if
> they offered the ability to disable the sleep mode totally, but then it
> wouldn't be "green" pfft).
thanks for your input. I did run wdidle3 on that drive two days ago stopping
but my original mail had a different target really. I have to recognize that I
don't know much about the inner-workings of a filesystem, but I find it odd
that once there is no input from the outside, a process keeps writing to the
drive indefinitely. in my very narrow thinking the fact that these writes
dissapear after a remount would prove their redundance.
to wrap it up, I see no logic to the above and this is why I ask the list to
tell me if this is
a. something that can easily be fixed via an option I failed to find
b. a critical part of xfs's internals that cannot be 'disabled' (with a short
c. simply a bug
with the little side-story with the WD 20EARS i was just portraying where this
default behaviour can get to.
I don't usually read marketing material, but WD acknowledges that their green
drives are wrecked in Linux and they simply encourage customers to change their
OS. I just have to ask why have we got to get to this point.
the drive I was trying to get into standby in the first half of my mail is a
different one, an enterprise ST31000340NS placed on an otherwise low power
ProLiant MicroServer. Having 8W*12h*30 = 2880 Wh less to pay per hdd per month
would be easily achievable if the standby mode would be reached when possible.