I reviewed this thread and one of the main points is APC is not a good product. 
 The one unit that was suggested was very pricey.  

I am in the market for a UPS for a public facing headless LAMP server I run out 
of my home office.  It has a 300 watt power supply.

Basically what I am looking for is:

1) low price < $100
2) to power down or deal with lightening since that season is upon us real soon
3) software to power down system (CentOS)
4) must be safe since it is in my house and I have pets.  No fires, no acid, 
etc.

Thank you for your feedback and guidance. 

------------------------

Keith Smith

--- On Mon, 5/13/13, Chris <plug....@2nerds.com> wrote:

From: Chris <plug....@2nerds.com>
Subject: Re: UPS recommendations
To: "Provo Linux Users Group" <plug@plug.org>
Date: Monday, May 13, 2013, 7:51 PM

On Sun, May 12, 2013 at 11:48 AM, Nicholas Leippe <n...@leippe.com> wrote:

> Where they are always online:
> 1) do they produce a lot of heat?
>
2) noise?
>

As I can't vouch for the performance of contemporary online UPS models, the
following observations are necessarily limited to my experience with the
ancient Prestige units.

I've never noticed any warmth from them, but they do draw power
continuously above and beyond that consumed by the output load.  With no
load, they dissipate a bit under 100 watts (as measured by a
kill-a-watt-like device), which is ~10% of their rated output.  That's
substantially more idle/internal power consumption than a non-online UPS
sitting in standby mode, but it's a price I've been willing to pay for the
non-switching sine-wave output.  I wouldn't be too surprised if more modern
online models were a bit more efficient given that they're built with
technology that is ~15 years newer.

My Prestige units have a small (100 mm-ish) variable-speed internal fan
that runs continuously at a low speed--which is probably why they don't get
noticeably warm when dissipating ~100 watts of power.  I don't find the fan
noise objectionable; others might. Again, more modern online models might
be quite different. See, for example, the 9130 tech-specs
page<http://powerware.eaton.com/PW9130L1500T-XL.aspx?CX=3>
.

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