Where your CCTV footage is stored affects resilience, cost, security and how easily footage can be accessed. For many organisations, the right answer is not simply edge or cloud.

Modern CCTV systems generate a significant amount of data.

The cameras themselves are important, but where all that video is stored is becoming an equally important part of CCTV design.

Traditionally, footage was recorded locally onto a DVR or NVR installed somewhere within the building.

Today, businesses can also store video in the cloud, record directly at the camera, or use a combination of local and cloud storage.

That creates more choice, but also more opportunity to specify the wrong solution.

For schools, healthcare environments and larger commercial estates, the decision should not come down to which option sounds the most modern.

It should come down to resilience, security, bandwidth, retention requirements, operational needs and cost.

What is edge storage?

Edge storage means video is stored close to where it is created.

That may mean directly on the camera using local storage, or within equipment located at the site.

The key point is that the footage does not need to travel continuously to a remote cloud platform before it can be recorded.

This can provide several advantages.

If the site’s internet connection fails, recording may continue locally.

It can also reduce the amount of video traffic leaving the building.

For sites with significant numbers of cameras, that can be important.

A properly designed CCTV system needs to consider not only camera quality, but also how recordings will be created, stored and retrieved.

What is cloud storage?

Cloud CCTV storage sends video footage to remote infrastructure where it can be stored and managed.

This can make footage easier to access across multiple locations.

Rather than relying on somebody physically accessing an NVR in a communications room, authorised users can potentially access footage through a secure platform.

That can be particularly useful for organisations with several buildings or sites.

Cloud platforms may also simplify central management, software updates and remote monitoring.

However, cloud does not automatically mean better.

The quality of the internet connection, the number of cameras, video resolution and required retention period all need to be considered.

The bandwidth question

This is one of the biggest practical differences.

Video creates considerably more network traffic than many other business applications.

A small number of cameras may be relatively straightforward.

A large site operating dozens or hundreds of high-resolution cameras is a very different proposition.

If footage is constantly uploaded externally, the organisation needs sufficient upstream internet capacity.

That requirement can increase further if cameras operate at higher frame rates or resolutions.

The underlying structured cabling, switching and network infrastructure therefore need to be considered as part of the CCTV project.

Installing advanced cameras onto unsuitable infrastructure can create performance problems elsewhere.

Cloud design should never begin with the assumption that bandwidth will simply be available.

It needs to be calculated.

What happens if the internet fails?

For many organisations, this is the first question worth asking.

If a CCTV system relies entirely on a remote cloud connection, what happens when that connection disappears?

A well-designed system should have an answer.

Some cloud-based systems can continue recording locally and synchronise footage when connectivity returns.

Others may depend more heavily on continuous connectivity.

This is why the terms cloud CCTV and edge CCTV can sometimes oversimplify the discussion.

There are many hybrid approaches.

A system can potentially record locally while using the cloud for management, remote access or selected event storage.

That can provide some of the benefits of both models.

Schools

Schools have some particularly demanding CCTV requirements.

A site may include classrooms, corridors, entrances, playgrounds, sports facilities, car parks and perimeter areas.

It can also have large numbers of cameras spread across several buildings.

Reliability is therefore important.

If internet connectivity is temporarily lost, the school may reasonably expect cameras to continue recording.

That can make local or edge recording attractive.

At the same time, centralised access can be useful for larger academies or trusts managing multiple locations.

A hybrid approach can therefore make sense.

Footage can be recorded locally while authorised personnel retain secure central access to the wider CCTV estate.

The precise approach should depend on safeguarding requirements, retention policies, network capacity and the way the organisation actually manages security.

Healthcare sites

Healthcare environments bring another set of considerations.

Security can be extremely important, particularly around entrances, reception areas, car parks, pharmaceutical storage and restricted areas.

But the environment may also contain significant volumes of sensitive activity.

That makes access control around recorded footage particularly important.

Organisations need to understand:

• who can view footage
• where it is stored
• how it is protected
• how long it is retained
• how access is logged
• how recordings can be retrieved
• what happens if systems fail

Cloud platforms can provide useful central management and access controls.

Local storage can provide resilience and reduce dependence on external connectivity.

Again, the decision should come from the operational requirement rather than a blanket rule that one storage model is superior.

CCTV may also sit alongside door entry and access control, allowing organisations to take a broader view of physical security rather than treating individual systems in isolation.

Commercial estates

For larger commercial estates, scalability often becomes a major factor.

Imagine an organisation operating six buildings.

A traditional approach might place separate recording equipment at every location.

That can work perfectly well, but somebody then needs to manage those separate systems.

Cloud management can make it easier to view and administer cameras across multiple locations.

However, sending all footage from every camera continuously to the cloud may not always be the most efficient architecture.

A hybrid model may provide central management while retaining video locally.

This can reduce bandwidth demands and provide additional resilience.

The right solution often depends on whether the organisation wants centralised monitoring, occasional remote access or simply reliable recording at each site.

Storage costs

Cloud CCTV is sometimes promoted as eliminating the need for recording hardware.

That can be true.

It does not mean storage becomes free.

Cloud platforms typically introduce recurring costs.

Those costs may depend on:

• number of cameras
• video resolution
• storage capacity
• retention period
• analytics
• platform features
• support arrangements

Traditional local storage generally involves a greater capital cost upfront because recording and storage equipment is installed at the site.

The longer-term cost model can therefore look very different.

Neither approach is automatically cheaper.

A proper comparison should consider the expected life of the CCTV system rather than simply comparing initial purchase prices.

How much footage should you keep?

More storage is not automatically better.

Recording every camera at maximum quality for months can create significant storage requirements.

The correct retention period should reflect the organisation’s needs and obligations.

Different organisations may require different retention policies.

That affects both local and cloud systems.

Storage requirements are influenced by:

• number of cameras
• recording resolution
• frame rate
• compression
• whether recording is continuous
• whether recording is event-driven
• retention period

These calculations should be carried out during the design stage.

Otherwise, the organisation may either purchase far more storage than required or discover later that the system cannot retain footage for as long as expected.

Security matters in both models

It is tempting to think of local storage as secure because it remains inside the building.

That is not necessarily true.

A poorly protected recorder sitting in an unlocked communications cupboard is not a secure system.

Equally, simply putting footage into the cloud does not automatically make it secure.

Security depends on the complete architecture.

That includes authentication, permissions, encryption, physical security, software maintenance and how remote access is controlled.

A professional installation should therefore consider CCTV as part of the wider network environment.

TCNS Cabling provides structured cabling, Wi-Fi and wireless infrastructure and CCTV systems, allowing connectivity and security requirements to be considered together.

Do you really need cloud recording?

Not necessarily.

Some organisations primarily need reliable recording at one location.

They may rarely view footage remotely.

In that situation, a well-designed local recording solution may provide everything required.

For another organisation with ten sites and a central security team, cloud management may provide substantial operational benefits.

The important point is that cloud should solve a problem.

It should not simply be specified because it appears more modern.

And do you really need edge-only storage?

The same applies in reverse.

Keeping everything local can create its own limitations.

If the recording equipment fails or is damaged, access to footage may be affected.

Managing separate systems across multiple locations can also become cumbersome.

Remote access may require additional configuration and ongoing management.

There can therefore be a strong case for introducing cloud functionality even where the primary recordings remain on site.

Hybrid is increasingly attractive

For many organisations, the debate is not really edge versus cloud.

It is about finding the right balance between them.

A hybrid CCTV architecture can potentially provide:

• local recording during internet outages
• centralised remote management
• reduced external bandwidth requirements
• cloud backup of important events
• easier multi-site access
• greater resilience

That does not mean hybrid is automatically the correct answer either.

It simply provides another option.

The design needs to reflect the way the organisation operates.

Start with the requirement

Before choosing a storage platform, there are several questions worth answering.

How many cameras will there be?

How long must footage be retained?

Who needs to access recordings?

Will access be required from other locations?

How reliable is the internet connection?

How much upstream bandwidth is available?

What happens if the site loses connectivity?

How quickly must footage be retrieved after an incident?

Will more buildings or cameras be added later?

Once those questions have been answered, the correct storage architecture becomes much easier to identify.

Design the whole CCTV system

CCTV storage should not be considered after the cameras have already been selected.

It is part of the system design.

Camera resolution affects storage.

Storage architecture affects bandwidth.

Bandwidth affects network design.

Remote access affects security.

Future expansion affects all of them.

At TCNS Cabling, we design CCTV systems alongside the physical infrastructure required to support them.

For schools, healthcare environments and commercial estates in particular, that means considering how the complete system needs to operate, not simply which cameras are going onto the wall.

The best storage solution may be edge, cloud or a combination of both.

The important part is understanding why.