Date: Sun, 19 Jan 2003 19:22:38 -0600 From: "Jack L. Stone" <jackstone@sage-one.net> To: Per olof Ljungmark <peo@intersonic.se> Cc: Mark <admin@asarian-host.net>, freebsd-questions@FreeBSD.ORG Subject: Re: Shutdown for APC Back-UPS 350 CS Message-ID: <3.0.5.32.20030119192238.011becd0@mail.sage-one.net> In-Reply-To: <3E2B4B52.3040702@intersonic.se> References: <3.0.5.32.20030119185811.011becd0@mail.sage-one.net>
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At 02:05 AM 1.20.2003 +0100, Per olof Ljungmark wrote: ><snip> >> To do what you want requires a UPS with "SmartUPS" to "talk" to your >> system. You have what is referred to as a "dumb UPS". I use SmartUPSes on >> "master" machines to tell the "slave" machines when to shut down and other >> instructions. The SmartUPSes will carry on an exchange with the machine, >> but the dumb ones will not. The slaves are attached to the dumb UPSes for >> continuations of power, but the SmartUPS tells each slave what to do and >> when to shut down. Each slave must have an apcupsd daemon installed, >> running and configured to communicate with the master over the network for >> this to work. ><end snip> > >But why then supply a cable for use between the 350CS and the computer? >I use only SmartUPS and BackUPS Pro so I could not be sure but... > >Per olof > I have been asking WHY have a cable with a dumb UPS for a long time and yet to get a good answer. I have tested with instruments the pins on those cables and very little to nothing found in a way of a signal. If you go to that apcupsd URL and did down you will find all (most) of the cables and it also explains them. SmartUPSes -- yes -- okay and will work with the cable. The computer may sense the dumb UPS -- BUT, will not communicate about shutdown and other critical info. If I'm wrong, then let me know.... I spent a lot of time falling for the "cable" bit. Dumb UPSes are useful for keeping the machines going until you or a master machine can tell it to shut down gracefully.... Best regards, Jack L. Stone, Administrator SageOne Net http://www.sage-one.net jackstone@sage-one.net To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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