Insight - Sector

Choosing camera retention.

How to set CCTV retention against the realistic timeline of an incident investigation - not the default the recorder shipped with.

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Retention is the difference between footage you can use and footage that's gone.

Most commercial CCTV systems ship configured for whatever retention the recorder defaults to - often a fortnight, sometimes a month. That is fine until an incident is only discovered six weeks later and the footage you needed has already been overwritten.

Retention is a planning decision, not a default. Set it against the realistic timeline of how incidents on your site are actually discovered and investigated - and against any retention obligations from insurance, regulators or contracts you operate under.

Factors

What drives the right retention period.

Three factors do most of the work in deciding how long your footage needs to live.

schedule

Discovery lag

How long after an incident it typically gets noticed. Retail stock shrinkage is often discovered at a monthly stocktake; a yard intrusion might be discovered the next morning. The longer the lag, the longer the retention.

policy

Compliance and contractual obligations

Some sectors and contracts specify minimum retention - aged care, gaming, government tenders, certain insurance policies. Check what your obligations are before deciding what the system can do.

storage

Storage cost and infrastructure

Longer retention means more storage. On a large camera count, that is real money and real rack space. Trade off retention against camera count, resolution and frame rate - not just one variable.

Typical retention periods we see by use case.

Storage planning

Sizing storage without over-spending.

Storage planning is where retention decisions get expensive. The trap is sizing for the worst-case combination: maximum resolution, maximum frame rate, every camera, the longest retention - on every camera in the system.

In practice, you size for what each camera actually needs. The till camera might justify 4K at 25fps with 90-day retention; the back-of-house corridor camera does not. Designing per scene rather than per system is what keeps storage proportionate.

CCTV storage infrastructure
Set it and document it

Retention only counts if it's enforced.

A retention setting is only as good as the recorder it lives on. We document the retention each system is configured for, audit it on scheduled maintenance, and flag when a disk or recorder change has quietly moved the actual retention away from what was specified.

If you do not know what your current retention is - or whether your recorder is actually achieving it - that is the first thing to check.

Not sure what retention your system actually delivers?

We'll audit your current CCTV against your operational risk and tell you whether retention matches what you need.

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Audit your CCTV retention against your real risk.

Send through your requirements. We respond within one business day with a project lead and next steps.

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