RE: How do redundant power supplies in servers work?

Both into ups. What wer have been finding is the small apc devices (anything under a smart ups) they will trip the server.  I will find the document we found about them shortly.

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Frank Bulk <[email protected]> wrote:


I don't follow you -- do you have the standby power supply plugged into the
UPS, and active one plugged into commercial power?

Frank

-----Original Message-----
From: Blake Pfankuch [mailto:bpfankuch-iDUpQSA8o47qlBn2x/[email protected]]
Sent: Sunday, September 11, 2011 12:03 AM
To: [email protected]; [email protected]
Subject: RE: How do redundant power supplies in servers work?

Regarding the HP DL 360/380 G6/G7 servers, they are usually an 10-15ms
failover.  We have run into this many times with small APC shoebox UPS' for
our customers where they do not switch over fast enough.

Blake Pfankuch
Connecting Point of Greeley
Network Engineer
(970) 356-7224 main
bpfankuch-iDUpQSA8o47qlBn2x/[email protected]

Cisco, Microsoft, Adtran and VMware Certification Information available upon
request.

-----Original Message-----
From: [email protected] [mailto:[email protected]] On
Behalf Of Frank Bulk
Sent: Saturday, September 10, 2011 9:58 PM
To: [email protected]
Subject: RE: How do redundant power supplies in servers work?

Yes, I've seen that graph in iLO -- vendors pleasantly surprise me from time
to time.

I will make that change the next time I'm in the BIOS.

Frank

-----Original Message-----
From: Erik Anderson [mailto:[email protected]]
Sent: Saturday, September 10, 2011 10:57 PM
To: [email protected]; [email protected]
Subject: Re: How do redundant power supplies in servers work?

On Sat, Sep 10, 2011 at 10:49 PM, Frank Bulk <[email protected]> wrote:
> Thanks for that explanation -- HP DL-series servers dominate our
> environment.

You're welcome!

> Are those 3 ways configured in the BIOS?

Yep - I don't have access to the BIOS on any of our machines at the moment,
but it was not hard to locate within a minute or two of digging around.

Also, if you haven't already discovered it, the iLO web management page
contains some very nice graphs showing current and historical power draw.

-Erik

--
Eat sushi frequently. - Avi
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-- 
Eat sushi frequently. - Avi
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