[58678] in North American Network Operators' Group
Re: "They all suck!" Re: UPS failure modes (was: fire at NAC)
daemon@ATHENA.MIT.EDU (E.B. Dreger)
Thu May 29 19:38:23 2003
Date: Thu, 29 May 2003 23:37:58 +0000 (GMT)
From: "E.B. Dreger" <eddy+public+spam@noc.everquick.net>
To: "nanog@merit.edu" <nanog@merit.edu>
In-Reply-To: <Pine.GSO.4.44.0305291641040.11168-100000@clifden.donelan.com>
Errors-To: owner-nanog-outgoing@merit.edu
SD> Date: Thu, 29 May 2003 16:53:43 -0400 (EDT)
SD> From: Sean Donelan
SD> Yep, tieing together "redundant" systems with parelleling
SD> gears turns two independent systems into one "co-dependent"
SD> system. In a failure situation, you want to compartmentalize
SD> the failure. Loosing half your systems may be better than
SD> loosing all your systems.
Too bad a substantial amount of equipment doesn't allow for
redundant plugins. The ability to plug { servers | routers |
whatever } into two totally separate power feeds is nice.
Anyone for building a rackmount transfer switch for two inputs?
Assuming it didn't fail (!) -- would the economies of scale work
for or against it compared to big transfer switches? Between
dealing with _much_ smaller current levels and the opportunity
for mass production, what are the chances of something like this
working?
Eddy
--
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