[filmscanners] Re: keeping the 16bit scans; now=HD longevity OT

["owenpevans" <owenpevans@rogers.com>]

Hi Art et al,
My experience with my current IBM-DTLA 307045 hard drive (45GB ) which is an
EIDE 7200rpm drive is a 50/50 split. The first one installed in my computer
three years ago burned out in 3 months, as I turned the computer off every
day. It was replaced under warranty and at the suggestion of the technician,
I have left the computer on 24/7 for the past 30 months. The only time I
shut down is for a reboot after a software upgrade or when I lose the
connection on my internet cable.
( infrequently ) Not one hiccough from this drive.

Secondly, I work in an industry wherein bearings are an extremely important
part of our products. Our bearings turn at 130,000 rpm! These are high
temperature 'ceramic' bearings because there is no way to generate these
speeds on metal bearings ( even bathed in refrigerated oil, constantly )
since they will break down and fail miserably in very short order. Our air
cooled bearings are warranted for ten years!

High speed usage (7,000 rpm isn't getting up there at all ). has been a
common application for over 25 years in my industry. In fact all of my
products which spin under 30,000 rpm still use captured metal bearings.These
bearings are machined very precisely and need no additional lubrication once
enclosed. Surely a hard drive manufacturer could put a decent set of
bearings into a hard drive!!

I have never heard of "liquid bearings"! Would you please elaborate on these
"liquid bearings"; I am always prepared to learn something new!

Owen


ART ENTLICH WROTE:

----- Original Message -----
>From: "Arthur Entlich" <artistic-1@shaw.ca>
>Sent: Saturday, March 29, 2003 7:36 AM
>Subject: [filmscanners] Re: keeping the 16bit scans


>A MAjOR (j=XT) hard drive company indirectly >admitted to me that there
>was a large failure rate on their 7200 rpm drives with >standard bearings.
They have since switched to "liquid >bearings" which "may" resolve this
problem.  I guess >time will tell.


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