There are many types of security camera fail-over solutions for cameras. Security camera fail-over means that video camera footage will be recorded even if the main recording method fails. Local and offsite solutions are the main choices available for security camera footage fail-over. When deciding to use local solutions the options include: DVR, NVR, servers, and SD cards. Usually local security camera fail over are the main method of video recording but can be used as a fail-over or backup. DVR usually work with Analog cameras. NVR work with network cameras. Servers are a high-end solutions for network cameras. Offsite backups include: cloud storage and offsite server backups. Cloud storage solutions usually use a third party server (ie amazon, DNS servers). Offsite servers are simply servers that are installed at a second location.