Re: BackUPS vs. SmartUPS
From: Jonathan (jonathanNOFISH_at_sprintmail.com)
Date: 01/28/04
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Date: Wed, 28 Jan 2004 10:57:59 -0500
In the old days, the BackUPS only gave simple signalling. IIRC, it would
raise/lower one of the RS-232 serial signals to indicate power
failure/restoration. That was all it was capable of. I don't know what
they've added to the USB variants, however.
The SmartUPS models were more intelligent. They would report things like
the input line voltage and temperature. Plus you could signal the UPS to
shut off, do self-tests, and other things. I'm using one of the older
serial SmartUPS models here at home and I really like it.
If you want to save some dough, find someone tossing out their UPSes and
snatch them up. It seems that everyone forgets that lead-acid batteries
only last a few years. So when the batteries go, they toss the whole UPS,
thinking its broken. Grab the bad UPS, find yourself a battery store or a
burgler alarm supply store and replace the batteries. Then, be a good
citizen and drop off the bad batteries at your city/county local recycling
drop-off so they don't end up in the landfills.
I got a small BackUPS 520 a few years ago that way; replacement batteries
cost me all of $22 at a hamfest.
good luck...
"Rob Knop" <rknop@pobox.com> wrote in message
news:q3zektkp07c.fsf@antonio.tmnwh.net...
>
> I want to get a UPS for several Linux systems. I need to be able to use
> signaling so that the machines will cleanly shut down in the event of a
> power outing. I will use apcupsd to do this.
>
> I'm looking at both the BackUPS (USB versions-- the RS and the Pro) and
> the SmartUPS from APC. The SmartUPS seems to cost a factor of two more
> than the BackUPS (for a given power rating), but from apcupsd I can't
> tell what the difference is.
>
> *Is* there any practical difference between the BackUPS and SmartUPS if
> you're using apcupsd? If so, what is it?
>
> Thanks,
>
> -Rob
>
> --
> -=-=-= Rob Knop =-= rknop@pobox.com =-= http://www.pobox.com/~rknop =-=-=-
> Help the EFF protect basic freedoms online: http://www.eff.org
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