On Tue, 01 Jul 2008 11:04:54 +1200
Matthew Poole
Which was really my point. Keeping a lot (and it'll number in the hundreds for Vector) of UPS's up and running isn't a trivial ask. The cost would be phenomenal, and every time batteries need to be changed it's an outage for the CPE that's on the end of it.
I think your knowledge of UPS technology is rather limited to the consumer end of the market. You'd centralise your power requirements, and protect the spurs themselves, as opposed to devices or racks, and you'd then protect the UPSes with an alternate supply source - usually diesel generators ( and, allegedly unlike one UK mobile operator, check the level of diesel in the tanks on a regular basis (: ). Also you have been able to change batteries on an UPS whilst live for many, many years. Steve