Don't Interrupt: Seven options for uninterrupted power

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30 September 2002 01:40 PM
Tags: ups, apc, power, battery, 700, 3000

How we tested

All UPSes were plugged in and charged up for 24 hours before testing.

UPS: Introduction
Small UPSes
APC PowerStack 450
APC Smart-UPS 700
Sola UPS 520RM 750
Upsonic Pro Power PLUS 700
Larger UPSes
APC Smart-UPS 3000
Powerware 5125 3000e RM
Upsonic Pro Power PLUS 3000
Sample Scenario
How we tested
Specifications

Small UPSes: We attached three assorted articles of network gear: a 10Mbps switch, a 100Mbps hub and a gigabit switch to the UPS and timed the battery life.
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.

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