Re: Rebooting and HDD spinup / spindown cycles [WAS: Re: Debian Wheezy - HP Pavilion dm1]
On Mon, 2013-10-21 at 20:33 -0400, Celejar wrote:
> On Mon, 21 Oct 2013 10:54:57 +0200
> Ralf Mardorf <ralf.mardorf@alice-dsl.net> wrote:
>
> > On Sun, 2013-10-20 at 18:44 -0400, Celejar wrote:
> > > On Sun, 20 Oct 2013 20:15:06 +0200
> > > Ralf Mardorf <ralf.mardorf@alice-dsl.net> wrote:
> > >
> > > ...
> > >
> > > > Each time you reboot, you harm your HDDs.
> > >
> > > You do?
> >
> > Everybody does. The spin downs and spin ups are a mechanical strain.
> > This is what cause the most often death of HDDs after a few years.
>
> Not sure I buy this - my understanding is that modern HDDs are
> typically rated for several 100,000 spinup / spindown cycles, so while
> I suppose that it's technically true that each cycle brings the drive
> closer to failure, I'm not sure that it's really reasonable to worry
> about things like several hundred or so additional reboots a year.
>
> Keyboard keys are also rated to last for some number of keypresses
> (several 10,000,000) - should we warn people that every keypress harms
> their keyboards? You might want to rethink the length of some of your
> emails ;)
5 reboots a day = 10 cycles
10 cycles * 365 days = 3650 cycles
3650 cycles * 10 years = 36500 cycles
I've got doubts that the click click click death will happen after
several 100000 cycles. It likely will happen before 36500 cycles. I do
not reboot 5 times each day, but I don't expect that my drives will
survive for more than 10 years.
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