What is colocation? Meaning, benefits and costs explained

Most businesses don’t start out looking for colocation.

They start with a server in an office. A comms cabinet in a corner. A small amount of kit kept in a room that wasn’t really designed for it.

And for a while, that’s enough.

Then requirements grow, more systems become critical, uptime matters more, security expectations increase, and power and cooling become harder to manage. Before long, the question changes from “Where can we put this?” to “Is this still the right place for it?”

That’s the moment when colocation enters the conversation.

If you find yourself researching “what is colocation”, looking for a clear colocation definition, or typing “colocation meaning” into your favourite search engine, this guide will help. We’ll explain how colocation works, why businesses use it, how it compares with cloud and on-premises infrastructure, and what to consider when choosing a provider.

What is colocation?

Let’s start with a simple colocation definition.

Colocation is a service that allows businesses to place their own servers, storage and networking equipment in a third-party data centre.

The business continues to own and manage the hardware. The provider supplies the specialist environment around it, including rack space, power, cooling, physical security and network connectivity.

And that’s the straightforward colocation meaning: your infrastructure is housed in a professional data centre rather than your own building.

For organisations searching “what is colocation”, the most important thing to understand is that ownership doesn’t change. You’re not handing your infrastructure over to somebody else. You’re simply moving it into an environment that’s purpose-built to support it.

How does colocation work?

Colocation services are built around a simple division of responsibility. You remain responsible for the infrastructure itself. That might include servers, storage systems, firewalls, switches and other networking equipment. You decide how it’s configured, maintained and used.

The provider takes responsibility for the environment around that equipment. That usually includes:

·       Rack space

·       Resilient power

·       Backup generators

·       Cooling systems

·       Fire protection

·       Physical security

·       Internet connection

You get the benefits of a professional data centre without the cost and complexity of building and operating one yourself.

Most providers also offer secure access and remote hands services. That means you can either visit your equipment when required or use on-site engineers to perform agreed tasks on your behalf.

What are the benefits of colocation?

If you asked ten businesses why they chose colocation, you’d probably get ten different answers.

For some, it’s about resilience. For others, it’s security, connectivity, compliance or simply running out of space on-site.

The most common colocation benefits tend to fall into a handful of areas.

Better resilience for critical systems

Data centres are designed to support infrastructure that organisations depend on every day.

That typically means resilient power systems, backup generators, uninterruptible power supplies, environmental monitoring and carefully managed cooling.

Compared with many office-based server rooms, that’s a significant improvement in resilience.

Stronger security without losing control

One of the most important colocation benefits is enhanced physical protection.

A good facility should include multiple layers of colocation security, such as controlled access, CCTV, secure racks or suites, monitoring systems and on-site personnel.

The key difference is that you’re improving the environment around your infrastructure without giving up ownership of it.

Connectivity designed for business use

High-quality connectivity is one of the main advantages of using a data centre.

Rather than relying on the limitations of a typical office connection, businesses can benefit from high-capacity internet access, resilient routing and connectivity options designed for critical services.

More room to grow

Infrastructure requirements rarely stay the same.

As organisations expand, they often need additional power, rack space, bandwidth and resilience. Colocation provides room to grow without requiring expensive changes to your own premises.

Less pressure on your premises

Running infrastructure on-site creates practical challenges

Servers need power. They generate heat. They need physical protection and monitoring. And they take up space that could be used for other purposes.

Moving that infrastructure into a data centre removes much of that burden while allowing you to keep control of the hardware itself.

Why businesses move from on-premises infrastructure to colocation

The question “why use colocation” is often prompted by the limitations of an on-premises environment.

An office server room may work perfectly well for years, but eventually businesses encounter familiar challenges:

·       Limited space

·       Growing power requirements

·       Cooling constraints

·       Security concerns

·       Compliance requirements

·       Business continuity risks

Modern hardware can make those challenges even more noticeable. Today’s infrastructure is often denser, more powerful and more demanding than previous generations. More power in usually means more heat out.

If you’re trying to operate a mini data centre from a room that was never designed for the job, that "why use colocation" question suddenly becomes a lot clearer. Keep full control of your infrastructure, but house it in an environment designed to support it properly.

Is colocation right for your business?

Colocation isn’t the right answer for every organisation. The right choice depends on what you run, how much control you need, and how your infrastructure is likely to evolve.

 

For many organisations, colocation neatly covers a middle ground between running everything on-site and moving entirely to the cloud.

Colocation vs on-premises vs cloud

Most businesses considering colocation are also weighing up their other options. The best option depends on what matters most to your organisation.

 

If your priority is flexibility and avoiding hardware management altogether, cloud may be the better fit.

If ownership, control, performance requirements or specific compliance needs are priorities, colocation may be worth considering.

Many organisations use both. A workload that makes sense in the cloud doesn’t automatically mean everything should live there.

What affects colocation costs?

If you’ve been researching colocation pricing, you’ve probably noticed that most providers don’t publish a simple rate card.

That’s because costs can vary significantly depending on what’s being hosted.

Setup costs may include:

·       Equipment transportation

·       Installation

·       Migration activities

·       Connectivity setup

Ongoing colocation pricing is usually influenced by:

·       Rack space

·       Power consumption

·       Connectivity requirements

·       Support services

·       Resilience requirements

Power is often one of the biggest variables. A single server has very different requirements compared with a rack full of high-density infrastructure.

That’s why the most accurate way to assess colocation pricing is usually through a conversation with a provider that understands your requirements.

Colocation service options explained

Not every business needs the same amount of space. Most providers offer a range of options to accommodate different infrastructure footprints.

 

Colocation security, compliance and connectivity considerations

For many organisations, colocation security and compliance are among the strongest reasons to consider moving into a data centre.

A modern facility should provide multiple layers of protection, including controlled access, monitoring systems, secure equipment areas and on-site personnel.

For organisations operating in regulated industries, compliance can also be a major consideration. Depending on your requirements, that might include standards like ISO 27001 or PCI DSS, alongside wider considerations around GDPR and data sovereignty.

Location can play a role too. For some businesses, knowing exactly where their infrastructure is located – and under which jurisdiction it operates – provides valuable peace of mind.

Connectivity is equally important. A good colocation provider should be able to support resilient, high-capacity connectivity.

How to choose a colocation provider

Choosing a colocation provider isn’t just about finding somewhere to put your servers.

Take location for example. If your team occasionally needs physical access to equipment, a well-connected facility can make life much easier. For businesses across the North West, a Greater Manchester location with direct access to major motorway links – like the Zen data centre – can be a practical advantage.

Power and cooling deserve attention too. Make sure the provider can support both your current requirements and your future plans. Finding a provider powered by renewables can also help support your sustainability objectives.

Support is another area that’s easy to overlook until something goes wrong. Access arrangements, remote hands services, technical expertise and responsiveness can all have significant impact on the overall experience.

Finally, think beyond today’s requirements. A provider that can scale alongside your business is usually a safer long-term choice than one that only meets your immediate needs.

Planning a move to colocation

Start by understanding your existing environment. That includes hardware, connectivity, power requirements, dependencies and future growth plans.

A migration plan should clearly define:

·       What’s moving

·       When it’s moving

·       What depends on it

·       How connectivity will be maintained

·       How downtime will be managed

·       How the environment will be tested

Many organisations choose a phased approach. This can reduce risk, minimise disruption and make the migration easier to manage.

Working with an experienced provider can also help avoid common mistakes and simplify the process.

Frequently asked questions about colocation

What’s the difference between colocation and cloud hosting?

With colocation, you own the hardware and place it within a third-party data centre. With cloud hosting, the provider owns the underlying infrastructure and delivers services from it.

How long does it take to set up colocation services?

It depends on the complexity of the deployment. A small installation may be completed relatively quickly, while a larger migration involving multiple systems and connectivity requirements might take a little longer.

What size business typically uses colocation?

There’s no single answer. Colocation is used by smaller organisations with specialist requirements as well as larger businesses running substantial infrastructure. The deciding factor is usually the infrastructure itself rather than company size.

Do you still own your servers in a colocation facility?

Yes. Ownership remains with the customer.

Can you access your equipment in a colocation data centre?

Most providers offer secure customer access. Many also provide remote hands services, allowing on-site engineers to perform agreed tasks on your behalf.

How secure are colocation data centres?

A good facility should provide multiple layers of physical and operational security, including controlled access, monitoring and secure equipment areas.

Can colocation support disaster recovery planning?

Yes. Many organisations use colocation as part of a wider business continuity and disaster recovery strategy.

Revisiting the question

Understanding the “what is colocation” question ultimately comes down to one simple idea.

You keep control of your infrastructure but place it in an environment designed to support it properly.

For organisations that have outgrown the limits of an office server room, colocation can provide greater resilience, stronger colocation security, better connectivity and room to grow.

It’s not the right answer for every workload. Cloud may be a better fit for some requirements, and smaller organisations may not need dedicated infrastructure at all.

But for businesses that want ownership, control and professional data centre facilities, colocation remains a compelling option.

Zen’s UK colocation services are delivered from our data centre in Greater Manchester, ideally positioned for businesses across the North West. With resilient infrastructure, excellent connectivity and expert support, we can help you decide whether colocation is the right fit for your business.

Speak to our colocation experts.