How to Record Security Cameras to a NAS Without a Dedicated NVR
Use RTSP/ONVIF and NAS surveillance software to record IP cameras without buying a vendor-specific NVR.
A NAS can replace a traditional NVR when it runs surveillance software that can ingest the camera's local streams. The cameras still need power and network connectivity, but recording, retention and remote management move to the NAS.
What you need
- Camera with documented local stream support.
- NAS surveillance software or a recorder container/application.
- Sufficient CPU/GPU resources for the camera count and codecs.
- Enough storage throughput and capacity.
- Licensing for the number of camera channels, if the NAS platform requires it.
RTSP versus ONVIF
RTSP can be enough for raw recording. ONVIF can make discovery, profiles and events easier when both camera and NAS support compatible profiles.
Why choose a NAS
A NAS can consolidate file storage, backups and surveillance on one platform and may provide RAID, snapshots and broader app support. A dedicated NVR is usually simpler, cheaper and more appliance-like.
Compare the architectures in NVR vs NAS and use the NVR/storage calculator for retention math.