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[filmscanners] RE: HD failure [was RE: keeping the 16bit scans}



In the intersts of keeping an interesting thread going here are some typical
reliability figures for hard drives:

Mean time Between Failure 300,000 hours (ie one failure every 34 years)

Start/stops (at 40 deg C) 40,000

On the basis of those figures I turned HD power management off on my PC. I
was finding the disks were getting turned off maybe twenty times a day,
which equates to one failure every 5 years or so.

Best regards


Mike Brown



> -----Original Message-----
> From: filmscanners_owner@halftone.co.uk
> [mailto:filmscanners_owner@halftone.co.uk]On Behalf Of Bob Frost
> Sent: 30 March 2003 10:57
> To: mike.brown@mindblown.com
> Subject: [filmscanners] Re: HD failure [was RE: keeping the 16bit scans}
>
>
> Laurie,
>
> Have you or anyone else seen data for MTBF due to recycling and
> MTBF due to
> bearing or other failure? Presumably the manufacturers must know how many
> startups/downs their drives will survive and how long the bearings will
> last. If we had that info we could balance one against the other and see
> where the optimum lies.
>
> Bob Frost.
>
>
> ----- Original Message -----
> From: "LAURIE SOLOMON" <laurie@advancenet.net>
> To: <bob@frost.name>
> Sent: Sunday, March 30, 2003 6:30 AM
> Subject: [filmscanners] RE: keeping the 16bit scans
>
>
>  When I say that turning a HD on and off has a negative
> effect in terms of wear and tear similar to that which might take place if
> one left the HD on all the time, I am speaking on the average and
> not to any
> particular individual case.  Unless, you are prepared to say that
> turning a
> HD on and off does not contribute to its wear and tear, the fact that you
> personally only do so once a week is sort of irrelevant as a refutation of
> my point. If you backed up or archived once a day every day, woulod you
> still be able to clain that the wear and tear of turning the drive on and
> off is less than keeping it on all the time during that week?
>
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