Edge storage

Flexible and reliable recording solutions

Edge storage is a technology used in Axis network cameras and video encoders that enables video recording directly to an onboard SD™ card or a network-attached storage (NAS) device. Edge storage makes it possible to design flexible and reliable recording solutions, optimize bandwidth usage, and lower the cost for remote site recording.

Decentralized storage is supported by AXIS Companion. It is also supported in software from Axis Application Development Partners Exacq Technologies and Genetec.

Decentralized storage

Edge storage eliminates the need and cost for an on-site server, DVR, NVR or PC for recorded video. It offers an affordable remote site recording solution wherever bandwidth is limited or absent. High quality images are stored on the camera SD card, replacing the need for an onsite server. Typical applications are single-site or multi-site installations such as a retail store/chain or branch office(s), temporary monitoring of construction sites, and mobile onboard surveillance.

Scenario #1

Temporary local storage of recorded video. Images are then transferred to a central server on demand, on schedule or in case of an event.

Scenario #2

Completely self-contained local video recording and storage. High quality video is permanently stored on the camera’s SD card. View live or recorded video from your PC or a handheld device. Supported by AXIS Companion.

Redundancy with fail-over recording

If a network failure occurs, the video stream from the camera will be stored on the SD card. When the network connection is restored and the system returns to normal operation, the central VMS can retrieve and merge local video recordings seamlessly. This ensures that the user gets uninterrupted video recordings.

Edge storage offers fail-over recording if the camera loses connection with the central server. Fail-over recording means that images can be temporarily stored on the SD card on board the camera in case of network failure. This functionality provides increased system reliability and safeguards system operation. Typical applications are mission critical installations, or video surveillance where network coverage is limited or intermittent.

Fail-over recording is supported by AXIS Camera Station. It is also supported in software from Axis Application Development Partners Aimetis, ipConfigure, Genetec and Milestone.


Low bandwidth

Upon an incident, the high quality video stream from the camera will be stored on the SD card of the camera, which is then retrieved by the central VMS for efficient forensic search.

Edge storage allows for bandwidth optimization in applications where bandwidth is limited. The user or an operator can view live video in in low resolution, while recording HDTV quality images locally on the camera. Typical applications are when using mobile viewing aps or in large scale systems such as city surveillance.

Bandwidth optimization is supported by AXIS Companion using Axis Mobile Streaming. It is also supported in software from Axis Application Development Partner Genetec. 


How much storage do I need?

The retention time of the card depends on how the cameras are configured to record at different frame rates and resolutions, depending on motion detection, alarm events and hours of the day.

Time 720p 1080p
1 week 30 fps 15 fps
2 weeks 10 fps 5 fps
4 weeks 5 fps 2 fps

The above has been calculated using the Axis Design Tool – Stairway scene. For full details and to calculate other scenes, please see Axis Design Tool.

Use case: For a small retail store with approximately 8 hours of recordings per day, a 64 GB SD card can store between 2-4 weeks of video. To attain a specific retention time for a 64 GB SD card, the frame rates and resolutions need to be configured accordingly. This table presents the maximum frames per second (fps) for two different resolutions: