HP3000-L Archives

September 2002, Week 3

HP3000-L@RAVEN.UTC.EDU

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Subject:
From:
John MacLerran <[log in to unmask]>
Reply To:
John MacLerran <[log in to unmask]>
Date:
Thu, 19 Sep 2002 16:05:17 -0500
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 Dear HP3000-l

We have an N-Class e-3000 (with 3 power supplies) configured as follows:
   Power supply 1 & 3 are on one PDU that goes to a UPS, and
   Power supply 2 is on the second PDU that goes to a second UPS.

We also have an N-Class 9000 box configured similarly. The 9000 box
needs all 3 power supplies to boot, but if one of the power supplies
fails, the system can continue to run on the other two.

Now for the question: Since both of the boxes in question are the same
hardware -- N-Class with 3 power supplies, do they both function the
same if one of the power supplies fails? If one of the power supplies in
the e-3000 fails, can it continue to run with the other two, or will it
crash?

The reason I'm asking is that in October, we're scheduled to do a QA
test of some of our UPS's, and it could lead to a situation where the
e-3000 will lose power on one of the power supplies for a period of time
(20 minutes or so, while the UPS is rated), and we want to know if this
is going to present a problem to our 3000.

Thanks!
----------------------------------------------------------------------
   John MacLerran
   IT Systems Analyst                       email:   [log in to unmask]
   Idaho State University                             V(208) 282-2954
   http://www.isu.edu/~macljohn                       F(208) 282-3673
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