Archive for the ‘Uninterruptible power supply’ Category

New UPS project update

Tuesday, November 11th, 2008

We are in the process of building a third massive UPS for our datacenter in Santa Rosa, and a number of big parts have recently arrived. This project has been underway for over a year now, and is a really large undertaking. The new custom engineered breaker panel board arrived ...

Critical systems: Power backup

Thursday, August 14th, 2008

Image via Wikipedia Obviously, an ISP doesn’t function without electricity, so we’ve got big investments in redundant power here. A datacenter power system consists of multiple inputs which are arbitrated by a transfer switch, and multiple loads such as UPS systems and air conditioners (CRACs). The primary input is PG&E, and the ...