How to configure a DX4700/DX4800 to delete video after 30 days.
Pelco Video Management
Video is not needed after 30 days of retention.
Configure storage using the Auto Delete feature.
Login at the DVR using the admin user account.
Using a mouse, click on Setup (gear icon).
Navigate to Camera > Storage.
Configure the Auto Delete (days) to the desired days. Use the right or left mouse buttons to adjust.