what kind of UPS will work best?

[Rob]

Pieter de Goeje wrote:
> verify my guess on the overall power usage of my servers I bought a VA/Watts 
> meter (EUR. 39,-). Turns out average wattage is about 90watts per server idle 
> and max 130watts under load. On powerup they will use a max. of 180watts for 

I've got one of these:  
http://www.newegg.com/Product/Product.aspx?Item=N82E16882715001

Works nicely for measuring cumulative power usage.  APC's web site also has a selector with very model-specific power consumption figures:
http://www.apc.com/tools/ups_selector/index.cfm

  -Rob