Alastair,
The short answer is that the two tools are approaching the problem from two
different directions. The models are in completely different classes with
different features.
My personal suggestion for your application is the Eaton EX 2200. There are
several reasons for this.
Cost
Features needed
Outlet needed (building power) (at least is true for US. 20 amp opposed to
30 amp for the 3kva)
Double conversion (no switching from line to battery)
The Eaton models below are higher end data center units as compared to the
APC models that are more like the EX and the Evolution lines (but not even
close in quality and performance).
I would go with the 2200 and if you need more run time add an external
battery or two. I usually shoot for a max load of 75 to 85% with an external
battery. This give extra capacity for inrush at startup and plenty of time
for shutdown. If you load the UPS too high there may not be sufficient
battery to properly shutdown all the devices.
You can add a management card or talk USB/Serial to the unit. With the Linux
box as the master you can use the WinNut Client (or the new Nut Windows
port) as a slave to shut it down. The Windows box will simply ask the Linux
box how the UPS is doing and the Linux box will report it's status.
Doug
----- Original Message -----
From: "Alastair Sherringham" <[email protected]>
To: <[email protected]>
Sent: Monday, April 23, 2012 10:22 AM
Subject: [Nut-upsuser] Advice on small office UPS
Hello Folks,
I have a couple of questions - one about a basic UPS choice I am to
make for a small UK office environment and the second about NUT
Windows support. For the UPS, I have 2 or 3 servers, a phone system
and a switch i.e. a basic :
- Dell R410 1U (2x IEC)
- Dell SC1425 1U (1x IEC)
- Mitel 3300 CXi phone system (1x IEC)
- Netgear GS748T switch (1x IEC)
It would be good to also be able to plug in another couple of servers
e.g. Dell PE1800 (2x IEC) and HP Proliant micro (1x IEC) but the above
is the minimum required.
Given the current status of NUT and the compatibility list, I was
looking at Eaton, and specifically the :
Eaton 5PX 2200IRT
However, before realising Eaton have a UPS selector to gauge
rating/size, I was using the APC UPS selector to check. With my
servers, switch and phone system, it was suggesting UPS systems like :
Smart-UPS 2200VA LCD
Smart-UPS XL 2200VA
Smart-UPS 3000VA LCD.
This includes adding the 2 extra servers I list above (Dell PE1800 and the
HP).
The Eaton UPS selector is very similar but seems to be suggesting
quite different, larger, more expensive UPS systems like :
Eaton 9170plus 3kVA HW
Not only larger, but quite a bit more expensive.
The Eaton 5PX 2200IRT seemed to be (roughly) equivalent to the
Smart-UPS 2200VA, but without the experience or knowledge of this
area, I don't know and the different results suggested by the tools
would concern me.
Any advice or thoughts on the above?
Lastly, one of these servers runs Windows 7 64 bit. I see NUT has a
Windows installer for version 2.6.1. I was a little surprised to see
this - but would be happy if it works on Windows as well. Does anyone
use NUT on Windows 7? It would be a "slave" to the UPS attached to a
Linux (Debian Stable) system (R410). I am not sure how to integrate
the Windows box into the NUT UPS system otherwise - native vendor
driver/tools?
Any feedback would be very welcome.
Cheers,
--
Alastair Sherringham
http://www.sherringham.net
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