What is the name of the sleep mode where a computer writes data to a file to protect itself when the battery is low?

The mode being referred to is commonly known as Safe Sleep. In Safe Sleep mode, the computer saves the contents of its RAM to the hard drive or solid-state drive as a file, ensuring that all open applications and documents are preserved. This feature is especially beneficial when the battery is low, as it allows the computer to enter a hibernation-like state. When power is restored, the computer can quickly resume from the exact point it was before entering Safe Sleep, with no loss of data. This contrasts with standard Sleep mode, where the computer maintains power to the RAM and enters a low-power state, but risk losing data if the battery dies while in that state. Safe Sleep acts as a safeguard against unexpected power loss, making it an important feature for users needing to protect their work during low battery scenarios.