[Nut-upsuser] choosing a UPS (in the United States)

[Daniel O'Connor]

On Wednesday 09 August 2006 10:09, Charles Lepple wrote:
> I don't know your physical setup, but if it were me, I would get a few
> rack-mount UPSes instead of putting everything on one big UPS.
>
> Obviously, you don't want to go too crazy on splitting things up,
> because the per-unit cost for replacement batteries is generally
> higher than half the cost of a battery twice as large.

Our UPS supplier was quite happy to sell us the batteries that actually go in 
the MGE EXB units. I haven't actually tried it but if the batteries start 
going I will seriously consider this approach because it's considerably 
cheaper and I don't believe it will be too much hassle (and the EXB will be 
out of warranty anyway)

> This also usually gives you more control over switchable outlets, in
> case you want to remotely power-cycle one particular server.

The Puslar Extreme we got (only 1500VA) had 6 outlets, 2 of which where 
individually switchable, I think if I wanted more control than that I would 
get a separate controllable outlet board.

Personally I have *never* had to power cycle a server but I don't put Windows 
on then ;)

The switchable outlets will come in handy for some of our other hardware 
though - occasionally the switch mode power supplies in our DAQ rack don't 
come up properly.

-- 
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
  -- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
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