To understand the topic of running automatic functions multiple times a day, you must understand the way in which DFSMShsm defines a "day" to these functions. Because automatic processing can begin, for example, at 10 p.m. on one calendar day, and end at 2 a.m. the next calendar day, calendar days cannot be used to define a "day". Therefore, a volume is defined as having been processed by primary space management, automatic backup, or automatic dump that "day" if any processor has completed processing the volume for the requested function within the past 14 hours.