On Wed, 2 Jul 2003 21:24:40 +0100
"John Smith" <(E-Mail Removed)> wrote:
> Thanks Rod,
>
> I am not up to date on these fluid bearing drives - the WDs aren't but
> the Seagates are? Using fluids is down to, what exactly, elminate the
> whine or to cut down noise generally?
Fluid Dynamic Bearings. Ball and roller bearings have lots of little
bitty pieces that spin around and if any of them is just the slightest
bit out of true or picks up the tiniest bit of crud then they make a
noise. Fluid dynamic bearings have only one moving part, the shaft, or
its attached bushings. They are designed to work with a specific
lubricant that maintains a continuous film in normal operation, hence no
vibration sources and less noise. Further, since there is in normal
operation no metal-to-metal contact they last longer.
Western Digital has a white paper on their site which states that they
are going to go to fluid dynamic bearings on their entire line, but
there's no timetable or list of models so equipped. Nonetheless it does
have a good short description of the technology
<http://www.wdc.com/en/library/eide/2579-001052-000.pdf>.
>
> J.
>
>
> "Rod Speed" <(E-Mail Removed)> wrote in message
> news:bdvenk$1181ld$(E-Mail Removed)...
> >
> > John Smith <(E-Mail Removed)> wrote in
> > message news:yoFMa.1194$(E-Mail Removed)...
> >
> > > Whilst I hear the WD 120GB Special Edition drives with
> > > 8MB Cache are super fast I also hear they are super noisy
> >
> > Nope.
> >
> > > and prone to high pitched whine.
> >
> > Can happen given that they are the last of the non fluid bearing
> > drives.
> >
> > > But, I hear some of the newer Seagates, although quiet, are
> > > lacking in performance - 120GB SATA is not that hot so I have
> > > read - and people are beginning to talk about the Samsung drives
> > > as being super-quiet. Anyone have any first hand info on this?
> >
> > The latest range is really too recent to be able
> > to say much on noise developing over time.
> >
> > There isnt even much around review wise yet.
> >
> > > Also, I hear that the IBM/Hitachis are considered good now but,
> > > um, after hearing about those faulty IBMs a year or so back and
> > > the issues people had with them I have drawn a mental line through
> > > buying them ever again. Did Hitachi over-come the IBM issues?
> >
> > They certainly never fessed up to what the problem was.
> >
> > Its too early to tell what the story with the 180GXPs will be
> > reliability
> wise.
> >
> > And they still have a hopeless RMA system where they wont preship
> > the replacement with a credit card required to protect them against
> > you not returning the one thats died. That alone puts them in the
> > bin as far as I am concerned. I wouldnt buy a drive from an
> > operation like that unless it left the alternatives for dead feature
> > wise, and they dont.
> >
> >
> >
>
>
--
--
--John
Reply to jclarke at ae tee tee global dot net
(was jclarke at eye bee em dot net)
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