> Pretty sensible IMHO - I live in a country with a reliable electricity grid, and outages due to UPS malfunction are about as common as power outages. Hence w

> Pretty sensible IMHO - I live in a country with a reliable electricity grid, and outages due to UPS malfunction are about as common as power outages. Hence why modern servers and their associated networking equipment have dual power supplies which could be connected to two seperate UPS systems. It would be very unlikely to have them both fail at once. In a less important home/small business scenario typically one supply is connected to the UPS and the other is connected to the wall via a surge protector.