An uninterruptible power supply is the only way to make sure your servers receive clean, sufficient, and consistent power. You’d never set up a rack without one, but protecting a new XServe is often overlooked when it’s added later on. In the past, configuring a UPS for Macintosh required tedious fiddling with dubious third-party software. Now the functionality is built directly into the operating system, and the most challenging part of the process is finding exactly where Apple put the controls.

The Art Department is cranking out proposals. Marketing is knee deep in spreadsheets. Everybody’s working furiously, when suddenly the panicked phone calls start. The Macintosh users can’t save their Office documents, and these cryptic messages appear when they try: