Difference between Shut Down, Sleep and Hibernate in Windows.

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     a)   Sleep Mode:

                                            Sleep mode is useful when you want to store your data (updated or modified) for a short period of time.

                                                                         So, Let's see what it is? If you keep your PC/Laptop into sleep mode then the data that you have access until then will be saved in the RAM storage. As we know RAM is a Volatile Memory (Temporary memory) (It retains its data while powered on) the data stored in it will be present until it has some power supply, if there is no power supply then the data is lost from the RAM. So, if you want to keep your PC/Laptop into sleep mode then make sure that PC has a continuous power supply and the laptop is fully charged otherwise you will lose your data which is very precious.

                                        You can keep your PC/Laptop into sleep mode if you want to store your data for a short period of time. i.e., until your battery lasts.

Advantage:

o  As we know RAM is faster than ROM and secondary storage when you turn your PC/Laptop from sleep mode it boots your system rapidly (The files are in the RAM itself).

Disadvantage:

o  You may lose your data if you want to store it for a longer period of time.
o  It uses more power when compared to hibernate mode.

       b)  Hibernate Mode:

                       Hibernate mode is useful when you want to store your data (updated or modified) for a longer period of time.

                                                                            So, Let's see what it is? If you keep your PC/Laptop into hibernate mode then the data that you have access until then will be saved in the secondary storage (HDD/SDD). As we know ROM and as well as secondary storage are Non-Volatile Memories (Permanent Memory) (Stores data even if the power is turned off) the data stored in it will be present until you delete manually. You can keep your PC/Laptop into hibernate mode if you want to store your data for a longer period of time.

Advantage:

o  You can store your data for a longer period of time without losing it.
o   It uses less power when compared to sleep mode.

Disadvantage:

o  As we know secondary storage is slower than RAM when you turn your PC/Laptop from hibernate mode it takes some time to start your system when compared to sleep mode (The files should be loaded from secondary storage to RAM).

     c)   Shut Down:


                      Shut down is most popularly used. If you keep your system in this mode all files are removed from the RAM.

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