Select "Application Saved Data Management > Saved Data in System Storage > Copy to USB Storage Device".
Select "Settings" from the function screen.
Connect a USB storage device to the system.
Here, we choose to save the PS4 data to a USB. You can also copy saved games to the cloud if you are a PlayStation Plus subscriber. You can copy or backup saved data that is stored on the PlayStation 4 system to a USB storage device. Replace the PS3 or PS4 hard drive to a bigger one Step one.