In the Windows XP operating system, the concepts of hibernation and standby modes were used. Newer systems use a different terminology: sleep and hibernation. Users who are accustomed to systematically turning off PCs and laptops, and after a while to force the system to start again, will appreciate the possibilities of both additional modes, which save time on loading the OS and opening documents, browser pages and applications again. For a full-fledged and comfortable work, it is worth remembering how sleep differs from hibernation and, accordingly, apply one or another mode depending on the circumstances.
In “ sleep ” mode, which was called “standby” in WinXP, the computer consumes the minimum amount of power. The video system (monitor and laptop screen) is turned off, the heads of hard drives are parked, only RAM remains in working order - standard voltage is supplied to it. However, the computer is not considered to be completely shut down.
In the “ hibernation ” mode, the computer's power is completely turned off, but before that the system state is saved to a file, which will be dumped into memory the next time it is started and will automatically bring previously opened applications and documents to the ready state.
It is advisable to put the system into sleep mode if the downtime is planned for a short time. The exit from this mode is carried out by pressing any button on the keyboard or by moving the mouse. It is worth remembering that data is not saved in this mode, so any changes will be lost in the event of a sudden power outage.
Hibernation, on the other hand, presupposes a long downtime and, in terms of the hardware, is no different from a simple shutdown of the computer - the system is completely de-energized. It is advisable to use this mode on laptops and other portable devices in order to save energy - it is the most power saving mode. However, the file that stores system state information takes up space on your hard disk, and the system takes some time to write it, and when turned on, to reload the information into RAM. But the data is preserved with proper operation of the storage medium, and the loss of changes in this case does not threaten. Waking up from hibernation is only slightly faster than a cold start, but avoids lengthy startup and application services startup processes.
- Sleep implies reduced power consumption, hibernation - a complete power off.
- In sleep mode, data on system operation is not unloaded from RAM, in hibernation mode, it is written to the hard disk.
- The transition to sleep mode and exit from it are carried out faster, almost instantly, for any activity of the I / O systems.
- Hibernation mode allows changes to be saved even if there is a subsequent power outage.
- Hibernation requires hard disk space to save data.