Colocation Services in Central London


In addition to being highly resilient and concurrently maintainable to the highest Tier III standards, Volta’s data centre provides a colocation centre of choice in the heart of London. Its Great Sutton Street facility is perfect for organisations who want to take advantage of all the benefits of colocation, while keeping their data within easy reach.

Why co-locate?

Whether your company is a start-up or a well-established global business, it relies on Big Data to grow and develop, using data analysis to gather crucial insights into consumer behaviour and to inform important strategy decisions. As your place of work and the hub of your communications, your office is not equipped to safely and securely store that critical infrastructure.

That’s why businesses of all sizes choose colocation, renting out purpose-built space for their data in the form of cabinets and racks (a rack is a standardised frame for mounting equipment and hardware). Colocation providers deliver high levels of security, with security guards and biometric access control available at all times.

Colocation providers also bring peace of mind, with data centres offering reliable backups and UPS devices to protect data against outages, including those caused by natural disaster, fire or flooding.

Frequently Asked Questions

Colocation, also known as colocation hosting, is when you rent space in a 3rd party data centre facility for your IT infrastructure. Using colocation services can provide benefits to your organisation that you may not notice if you were to create your own data centre.

Read more in our What is colocation? blog article.

A data centre is a purpose-built facility for storing, powering, cooling, and connecting your IT infrastructure. Colocation is a service provided by a Data Centre, delivering  empty racks, power, cooling and security services for a customer to install their own equipment outside of their premises.

Physical security, which refers to physical access to the buildings where servers are hosted, is probably the most significant security advantage of colocation facilities, especially when compared to on-premises infrastructure.

Of course, most modern security threats, such as ransomware and distributed denial-of-service assaults, do not require physical access. However, there are a variety of distinct forms of physical hazards that must be considered.

We provide 24/7 manned security, use external and internal HD CCTV systems, and optional biometric ID-only entry points to further protect your assets. We also keep track of maintenance logs and testing schedules, and implement strict fire risk policies.

High-Quality Security – Colocation data centres use cutting-edge security measures that are just out of reach for many private data solutions. Multiple security gates and sophisticated logical security techniques like biometric scanners are used in these hardened facilities to ensure that only authorised visitors may physically access vital data assets.

Scalability – Companies frequently turn to a colocation provider because their current data solution has outgrown them. A company can negotiate service conditions with a colocation provider that allow it to scale services as needed.

Better Uptime Reliability – Uptime reliability for on-premises data solutions isn’t always the best, and it varies from provider to provider. If the facility has an excellent track record, this is one of the best advantages of colocation. E.g. a colocation data centre with a verified uptime reliability 99.99% has less than 56.2 minutes a year.

Interconnectivity – For colocation customers, a carrier-neutral data centre offers a wide range of connectivity alternatives. One of the important reasons why companies migrate to colocation data centres rather than creating their own private data centres is because of the vast connectivity options.

Improved Resource Deployment – A private data centre can be highly expensive to build, and there are other costs that remain after the facility is finished. Outsourcing data centre infrastructure to a colocation facility frees up precious IT capacity, lowers overhead, and allows a company to focus more on research and development rather than troubleshooting their infrastructure on a regular basis.

Here are 3 of the top considerations when choosing a colocation provider…

1 – Location, location, location. If the data centre is mainly being utilised for storage and cloud access, it should be positioned close to your main office. Choose a colocation data centre within easily accessible distance of your IT staff so that they have easy access to the facility; or, if an edge data centre is being used to provide services to customers, it should be located as close as possible to the intended end users to minimise latency issues.

2 – Sustainability. For many businesses, this is a major issue. Organisations devoted to adopting creative and environmentally friendly policies should seek to partner with colocation providers who put forth the effort to build sustainable processes. Green power programmes in data centres are always exploring innovative ways to supply services as efficiently and affordably as feasible.

3 – Network Solutions Build Capacity. Many businesses require their colocation data centres to deliver more than simply space to keep their servers. Such organisations may want network solutions that maximise data security while simultaneously providing scalable cloud computing services. Hybrid cloud and multi-cloud deployments can give these businesses the best of both worlds.

For a more comprehensive list of considerations, download our ebook 11 Questions To Ask When Choosing The Right data Centre.

There are a variety of space configurations and service options available with server colocation.

The smallest amount of data centre colocation space is measured in per unit (U).  1U, 2U, 3U, and 4U colocation space are examples of per U colocation. 1U colocation measures approximately 19″ wide x 36″ deep x 1.75″ high.

Quarter rack colocation consists of around 10U of total colocation space and 8U to 9U of usable space. The size of the rack enclosure, which can be 42U, 46U, 47U, or 48U, determines the number of rack units (U) in a quarter rack. The spacing of the divider shelves also plays a role.

Most data centres do not provide single u or quarter racks

Half rack colocation gives about 20U of total colocation space and 16U to 18U of usable colocation space.

The most frequent colocation space offerings among nearly all colocation data centre operators are full rack colocation and locked cabinets. Full rack colocation provides 42U to 47U (and sometimes more),  of total colocation capacity

As you would imagine, the cost of colocation is directly related to your needs and specifications, and so will vary from customer to customer. Contact our specialists who’ll be able to provide more pricing information once we’re clear on your individual needs.


The advantages of colocation

Colocation services generally provide a range of business benefits. As inhouse server rooms are so complex and expensive to maintain, storing them in a dedicated facility means significant cost and time savings. Data centres are also built with enhanced security and compliance in mind. They allow for easy scalability, are manned by expert engineers 24/7, and offer levels of redundancy and uptime that an office server room simply cannot match.

Volta’s central London colocation spaces offer all this and are even pre-configured to your specific requirements ahead of moving in day to minimise set-up time and resource. If it’s colocation in London you’re looking for, whether you need individual racks or full cages with multiple racks, Volta Data Centres can house, secure, and maintain, your assets with ‘always on’ power and connectivity.


The importance of physical security

The IT hardware today’s businesses use is critical to their existence. If data is lost, connectivity or power fails for a significant period of time, or assets are seriously compromised, the damage to the brand can be irreparable.

At Volta Data Centres, we understand this. It’s one of the reasons our Great Sutton Street site was chosen, with its rugged build quality and comfortable distance from flood risk areas.

To further fortify your assets, we employ 24/7 manned security, use external and internal HD CCTV systems and optional biometric ID-only entry points, regularly update maintenance logs and testing schedules and deploy rigorous fire risk protocols.


The Volta space is different

Customers who entrust us with their critical IT assets are, of course, drawn to our multiple accreditations and certifications, transparent pricing, easy scalability options, heavy-duty security, 100% uptime, formidable resilience, state-of-the-art cooling systems, and green credentials, but our facility itself offers some very human benefits too.

Located as we are in central London, our facility is just seven minutes from Barbican Station, 10 minutes from Farringdon Station, 15 minutes from Old Street Station, and 16 minutes from Bank Station, meaning your infrastructure is within easy reach. If you’re driving to us, parking with free EV charging points as well.

Once inside, our customers have access to stylish meeting rooms, changing rooms with hot showers, a comfortable break-out lounge, and kitchen facilities. And, if you feel like a change of scenery, upon stepping out of our grounds, you will be met with an array of pubs, bars, and eateries.



Top 11 questions to ask when you search for your data centre provider. With these questions answered, you will be able to find the right data centre for your business and understand how to maintain the benefits delivered from your new partnership.

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Download Volta’s specification guide providing full details of the Volta Data Centres service offerings and infrastructure specification on power, security, certification and many more.

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