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From: Joe Greco <jgreco@brasil.moneng.mei.com>
Message-Id: <199612031959.NAA27149@brasil.moneng.mei.com>
Subject: Re: ups recommendations...
To: pitlord@nrv.net
Date: Tue, 3 Dec 1996 13:59:40 -0600 (CST)
Cc: michael@memra.com, freebsd-isp@freebsd.org
In-Reply-To: <32A3DC96.2231@nrv.net> from "Troy Settle" at Dec 3, 96 02:53:58 am
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> Michael Dillon wrote:
> > > 4)  I was told to keep my router off of the ups completely.  The logic was
> > > if my router was still up and the telephone company was down then it would
> > > be more difficult for the router to reconnect.  I don't quite follow this
> > > line of thinking.  After all the CO has power backups out the wazoo, so it
> > > stands to reason it would be up.  Anyway, what thoughts do you have on this
> > > point?  Keep the router on the ups or off?
> > 
> > Keep it on. All your leased line customers with UPSes will be happy and
> > some of your dialup customers will have UPSes or else their power will not
> > be out so they will be happy that they can continue surfing. Consider
> > keeping a 386 laptop running a RADIUS server on the UPS as well with the
> > screen disconnected (install a switch). When the UPS runs out, the laptop
> > battery will keep it going for another few hours.
> 
> When the UPS goes out, what do you need a RADIUS server for?  you're
> terminal
> servers, routers, and everything else depending on the UPS is gonna be
> dead.

Because you may have multiple UPS's?

Around here, greatest priority is given to maintaining routers and other
transit equipment.  The moment the network dies, nothing else _matters_.

I have three UPS "zones" covering my three racks, functionally divided.  I
am convinced it's not enough.

Ideally, I want total redundancy, so that loss of any particular bit of
hardware (including a UPS blowing a breaker, etc) does not fatally impair
the operation of my core networks and services.  Since most things are
duplicated, this is not too hard to accomplish.

... JG