[c-nsp] Multiple power supply failures. Advise needed

[Edward Salonia]

You could look at something like this:
http://www.apc.com/products/resource/include/techspec_index.cfm?base_sku=ACF001

It gets installed in the bottom of the rack to take air from below the
raised floor and blow it up the front of your cabinet. It has a built in
(replaceable) filter, so it will keep any "junk" that is in the floor from
getting blown into your enclosure.

Good Luck.

Edward

On Tue, Sep 1, 2009 at 5:27 PM, Michael Ulitskiy <mulitskiy at acedsl.com>wrote:

> Unless they vaporized by the short.
> Unfortunately I don't have those supplies anymore. They're either in the
> garbage
> or shipped back to vendor for replacement. In any case it would let me make
> certain
> about the reason for the failures at most (which is sure very important),
> but the
> important question is what can I do to stop it. I'm still at loss...
>
> Michael
>
> On Tuesday 01 September 2009 04:59:40 pm Randy McAnally wrote:
> > You could pull apart a blown supply and look for them.  According to the
> wiki
> > they should be somewhat visible, at least with a magnifying glass.
> >
> > --
> > Randy
> >
> > ---------- Original Message -----------
> > From: Michael Ulitskiy <mulitskiy at acedsl.com>
> > To: cisco-nsp at puck.nether.net
> > Sent: Tue, 1 Sep 2009 16:35:49 -0400
> > Subject: Re: [c-nsp] Multiple power supply failures. Advise needed
> >
> > > Well, I find the idea with whiskers particularly interesting,
> > >  because a lot of things described are perfectly matched with my
> situation.
> > > We did recently moved, the data-center does have tiled raised floor
> > > (don't know if it zinced though) and the airflow is bottom to top
> > > which probably helps to bring conductive particles like metal dust
> > > up to the server level where it can be sucked by the power supply
> > > fan. The place is new and we've been the first to occupy it, so we
> > > have the longest exposure and if this theory is true we should be
> > > the most affected and we are.
> > >
> > > Now I've spent last hour googling and I can't see what I can do to
> > > help it. Any suggestions?
> > >
> > > Michael
> > >
> > > On Tuesday 01 September 2009 02:29:21 pm Mark Kent wrote:
> > > > >> Check out http://en.wikipedia.org/wiki/Zinc_whiskers and Google
> for
> > > > >> "zinc whiskers".
> > > >
> > > > Or, just as useful to you, check out new-ish research results:
> > > >
> > > >
> http://blogs.physicstoday.org/update/2009/05/how-tin-whiskers-grow.html
> > > >
> > > > Note that it is in-plane strain *gradients* that lead to the whisker
> > > > growth.  If you were previously working on the strains themselves
> then
> > > > this may be the big break you were looking for.
> > > >
> > > > -mark
> > > > _______________________________________________
> > > > cisco-nsp mailing list  cisco-nsp at puck.nether.net
> > > > https://puck.nether.net/mailman/listinfo/cisco-nsp
> > > > archive at http://puck.nether.net/pipermail/cisco-nsp/
> > > >
> > >
> > > _______________________________________________
> > > cisco-nsp mailing list  cisco-nsp at puck.nether.net
> > > https://puck.nether.net/mailman/listinfo/cisco-nsp
> > > archive at http://puck.nether.net/pipermail/cisco-nsp/
> > ------- End of Original Message -------
> >
> >
>
>
> _______________________________________________
> cisco-nsp mailing list  cisco-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/
>