On 11/11/13 17:45, Ben Whyall wrote:
Ideally I would need power for my workstation, router, network switch, phone, 2 monitors, external drive bay and laptop
Why do you need to power your laptop from the UPS ?
As others have said go with APC and use Apcupsd to manage it and tell your workstation to shutdown gracefully when there is only enough power left to allow it to do so.
As for working out what you need, APC have calculators though they tend to be a bit on the pessimistic side ( I wonder if the marketing team had a hand it that to push you up the range )
I'd say finger in the air that you could get away with a 750VA but I'd go for 1500.
Rule of thumb calculations below
Screens 50W each (could be an overestimate, I don't have any here to look at)
say 30W for external HDD Router and switch 10W each
To get the W rating of a UPS from the VA we are either going to have to go to great pain to calculate the power factor of all your kit combined or I guess and say it is likely to be about 0.7 overall.
W = VA × PF would then give you about 500ish Watts of capacity minus the 150 above that doesn't sound like lots left over for your workstation and laptop? if you get the 750.