I know nothing about UPS systems, so I would like some idea of how to go about choosing a UPS for three servers. What we want is to have about 30 minutes running time to keep three servers running as I am finding that when my clients shut down the servers so that an electrician can do something or if we have a power cut, it causes a lot of problems getting the network back online as they don't always switch all the servers on as they don't know what they are doing.
So I want an UPS for each client that will keep three servers running for 30 minutes in the event of a power cut and I want to understand what the difference between the UPS products out there are as there are big price differences between all the UPS products out and I don't know what is hype and what is necessary.
I am based in the UK, so UPS products would need to be available in the UK
Thank you