Identify what is stored, and where
Local video may live on a recorder, server or camera card. Cloud video is stored remotely by a service. A cloud-connected app may only provide access to local video, while another service stores event clips or a continuous second stream. An alert, thumbnail or searchable event is not necessarily a saved video copy.
For each important view, write down the recording location, resolution, recording mode, retention period and export method. If the system is described as hybrid, specify which video stays local and which video is uploaded.
Choose by the failure you need to withstand
| Scenario | Evidence to plan for |
|---|---|
| Internet connection fails | Local recording that works with the available power and network. Verify whether cloud uploads buffer, resume or leave gaps. |
| Recorder is stolen or damaged | A usable copy already stored elsewhere. Remote access to that recorder alone does not preserve its video. |
| Site loses power | Power for every required camera, network device and recorder. Cloud storage cannot upload video a camera did not capture. |
| Account or subscription becomes unavailable | A documented recovery and export route, plus clear retention and deletion terms. |
Local storage can suit continuous recording where upload is limited. An off-site copy can preserve uploaded evidence after local equipment loss. Neither arrangement removes the need to check devices, storage health and access permissions.
Upload bandwidth and total cost
Size uploads from the streams actually sent off site. Four continuous streams at 2 Mbps each total 8 Mbps before overhead; this is an illustrative load, not a recommended internet service. Allow for other traffic, changing bitrate and any delayed uploads after an outage. Event-only upload depends on activity and clip length.
Compare hardware, drives, replacement, power backup and administration with subscription costs over the same ownership period. Check how the service charges for cameras, resolution, retention and additional users. Do not assume cloud resolution or recording days match the local copy.
Axis's cloud storage manual, for example, separates compatibility, recording settings and licensing. Its requirements apply to that service; review the current terms of the service you actually choose.
Outage recovery and independent copies
Confirm whether stored video is automatically uploaded after reconnection, how long buffering lasts and what happens when the buffer fills. The Axis cloud storage technical paper describes buffer limits and possible loss of unsent video in its own implementation. Other systems can behave differently.
For a planned local-and-cloud arrangement, check each location independently using a known test interval. A timeline visible through two interfaces may still point to a single copy. Use the storage calculator for the local retention estimate, then measure actual retention after installation.
Verify access to useful evidence
During an agreed commissioning window, test an export with the intended user account and player. Check timestamps, image detail and the interval before and after an event. Test the agreed connection-loss scenario without disrupting an operating site's recording, then verify local footage and any resumed uploads separately.
Discuss a recording plan with the required retention, available upload connection, failure scenarios and users who need access. State whether you need remote viewing, off-site event clips or a continuous second copy.