Several configuration options for power management in the Vista system
Windows Vista uses system sleep state (Sleep) as the default energy-saving method. The sleep state in Vista combines the advantages of traditional standby or hibernation: when the system enters the sleep state, it automatically saves all data in memory to the hard drive (similar to hibernation), but does not cut off power supply to the memory, so the data in the memory is still maintained (similar to standby). This is equivalent to adding a double insurance to the system. If there is no power loss during sleep, when resuming, the system will resume like from standby, and can return to normal status in just a few seconds; if there is a power loss during the process, when resuming, the computer will resume like from hibernation, and can return to normal status in just over a minute. In the default installation, Windows Vista uses its energy-saving mode called the Balanced Plan (Balanced plan).