Suspend-Resume is a time-saving feature that allows you to power cycle your system without losing the state of your current activities. Your workspace and files are preserved when the system is powered off so that they are restored to the same state when the system is powered on.
For example, if you are in the middle of revising a document when you decide to leave, you can power off your system using the Suspend feature and your work session is automatically saved. The next time you power on the system, the Resume feature causes your work to appear in the same state as before
Suspend-Resume is used automatically when the Power Management software performs AutoShutdown or AutoWakeup of your workstation. You also can use the keyboard to Suspend or Resume your system whenever you choose.