document: The UPS as network management tool Uninterrupted power supplies -LRB- UPS -RRB- , or battery backup systems , once provided a relatively limited , although important , function-continual battery support to connected equipment in the event of a power failure . However , yesterday 's `` battery in a box '' has evolved into a sophisticated network power management tool that can monitor and actively correct many of the problems that might plague a healthy network . This new breed of UPS system provides such features as automatic voltage regulation , generous runtimes and unattended system shutdown , and now also monitors and automatically restarts critical services and operating systems if they lock up or otherwise fail
doc_bio_tags: O O O O O O B I I O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O B I I O O O O O O O O O O O O O O O O O O O O O O O O O O O O B I I O O O O B I I O O O O O O O O O O O O O O O O O O O O