[80064] in North American Network Operators' Group
Re: Dual rackmountable power supply?
daemon@ATHENA.MIT.EDU (william(at)elan.net)
Fri Apr 22 18:53:35 2005
Date: Fri, 22 Apr 2005 15:52:54 -0700 (PDT)
From: "william(at)elan.net" <william@elan.net>
To: Mike Sawicki <fifi@HAX.ORG>
Cc: nanog@merit.edu
In-Reply-To: <20050422223351.GT10600@HAX.ORG>
Errors-To: owner-nanog@merit.edu
Without 1-1 transformer and complex switching circuitry you really can't
do safe switching from one to the other. That pretty much means any such
device would be just as complex or more so as UPS, but less safe. So I
think your best bet is to decide if your power problems last long and if
they dont last more then several minutes and then just use regular UPS or
if its bigger problem, then use UPS that can accept redundant power sources.
For servers with redundant power supply its quite different because they
do provide power to the board from multiple sources and each one is
already DC so its not a problem to switch quickly then.
On Fri, 22 Apr 2005, Mike Sawicki wrote:
> Do any of you know if there are companies who manufacture 1/2U
> rackmountable PDU's that take AC from redundant sources? I have
> equipment at a colo that seems to have issues with one of the two
> circuits in my cabinets about once a month. Since it would be a
> real pain in the neck for me to retrofit every server with dual-ps,
> I was thinking this could be a possible middle-of-the-road solution.
> Thanks.
> --
> Mike Sawicki (fifi@HAX.ORG)
