The advantages and disadvantages of computer sleep, standby, sleep and different differences

The Windows operating system has long been in standby, hibernation, etc., and Windows Vista has added a new mode called sleep, but many people are still used to completely shut down the computer when not using it. In fact, by making full use of these modes, we can not only save power consumption, but also restore the system to normal operation in the shortest possible time.

Sleep is a new mode in Windows Vista that combines all the benefits of standby and hibernation. After switching the system to sleep state, the system will transfer all the data in the memory to the hibernation file on the hard disk (this is similar to hibernation), then turn off the power supply of all devices except memory, so that the data in the memory is still maintained. (This is similar to standby). In this way, when we want to recover, if there is no abnormality in the power supply during sleep, we can recover directly from the data in the memory (like standby), and the speed is very fast; but if the power supply during the sleep is abnormal, the memory The data has been lost and can be recovered from the hard drive (like hibernation), but the speed will be slower. However, this mode will not cause data loss anyway.

Standby After switching the system to this mode, except for the memory, the power supply of other devices on the computer will be interrupted. Only the memory relies on the power to maintain the data (because the memory is volatile, just disconnect Electricity, the data is gone). This way, when you want to restore, you can directly restore to the pre-standby state. This mode is not completely power-hungry, so if there is an abnormality in the power supply during standby (such as power failure), then the next time you can only reboot, so the unsaved data before standby will be lost. However, this mode has the fastest recovery speed and can be recovered within five seconds.

Hibernate After switching the system to this mode, the system will automatically transfer all the data in the memory to a hibernation file on the hard disk, and then cut off the power supply to all devices. In this way, when restoring, the system will read the contents of the hibernation file directly into the memory from the hard disk and return to the state before the hibernation. This mode does not consume power at all, so it is not afraid of power supply abnormality after hibernation, but the cost is that it requires a hard disk space of the same size as physical memory (fortunately, the current hard disk has already crossed the TB level, and the large-capacity hard disk is getting cheaper and cheaper). The recovery speed of this mode is slow, depending on the memory size and hard disk speed, it usually takes about 1 minute or even longer.