RE: when a ups doesn't help -- MIDRANGE-L

The FC for a 520 second PSU appears to be #5158 850W AC Power Supply for
a Model 520.  It is customer-installable and does not, of course, ship
with a line cord.  "The #5158 is an optional 850W power supply which
provides redundant power for the Model 520 system unit."

The system builder shows the placement for it on the back, right next to
the existing PSU. 

Don't forget redundant PSUs for any additional towers you might have,
like an 0595.

John A. Jones, CISSP
Americas Information Security Officer
Jones Lang LaSalle, Inc.
V: +1-630-455-2787 F: +1-312-601-1782
john.jones@xxxxxxxxxx

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jim Franz
Sent: Wednesday, February 22, 2006 9:38 AM
To: Midrange Systems Technical Discussion
Subject: Re: when a ups doesn't help

UPS was working. The rack power strip failed .
     i5 ---> rack power strip ----> UPS

Is redundant power available on smaller i5's ??

jim franz


----- Original Message -----
From: "John Candidi" <jacandidi@xxxxxxxxxxxxxxxxxxxx>
To: "'Midrange Systems Technical Discussion'" <midrange-l@xxxxxxxxxxxx>
Sent: Wednesday, February 22, 2006 10:25 AM
Subject: RE: when a ups doesn't help


> Wouldn't the I5 have stayed up if the UPS was working properly?
>
> -----Original Message-----
> From: midrange-l-bounces@xxxxxxxxxxxx
> [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Walden H.
Leverich
> Sent: Wednesday, February 22, 2006 10:12 AM
> To: Midrange Systems Technical Discussion
> Subject: RE: when a ups doesn't help
>
> Don't see how a separate UPS would have helped here. Had the power
strip
> been plugged into an i5-only UPS and the monitor plugged into the
power
> strip you would have had the same problem, no? I see no reason to have
a
> separate UPS for the i5. If anything, I'd argue against it. I would
want
> a UPS (and probably a generator) that supported my computer room,
> period. Why treat the i5 differently?
>
> Sounds to me like the problem was a piece of faulty equipment, namely
> the monitor. Had the faulty equipment been an i5 tape drive, for
> example, would you be asking if you should move your Wintel servers to
> their own UPS to protect them?
>
> I would think this is a case where dual power supplies would have made
> sense though. You'd have killed the power to one strip, and thus one
> supply, but the other supply would have kept the i5 chugging -- of
> course, that assumes you didn't plug both power supplies into the same
> strip. <G>
>
> FWIW, in the office our i5 is supported from the same UPS as our
Wintel
> servers and comm equipment -- but the monitor for the servers is _not_
> on the UPS, but that's a UPS runtime consideration. In the data center
> all our wintel servers are on the same UPS system as linux boxes, aix
> boxes, comm equipment, IBM tape silos, and IBM and EMC SAN servers.
> Lights, phone, end users, etc. are on the generator, but not the UPS.
>
> -Walden
>
> ------------
> Walden H Leverich III
> Tech Software
> (516) 627-3800 x3051
> WaldenL@xxxxxxxxxxxxxxx
> http://www.TechSoftInc.com
>
> Quiquid latine dictum sit altum viditur.
> (Whatever is said in Latin seems profound.)
>
>
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