How we tested
All UPSes were plugged in and charged up for 24 hours before testing.
Scenario 2: We attached the abovementioned hubs and switches plus an Acer Altos 1200 server and an old Digital 14in monitor to increase the load.
Battery life was timed by recording the timestamp on a system while pinging a Testlab server through the gigabit switch. As soon as the pings stopped, the clock was stopped and the runtime calculated. Each server was tested twice and the results averaged.
Interoperability was rated on operating system support, easy-to-read display, and software.
Futureproofing scores were based on replaceable batteries, the ability to add batteries, and the availability of a network module.
ROI was calculated based on the cost per minute of uptime provided by the UPS.
Service dealt with the duration and terms of the warranty.
4%
4%
