Colocation: data centre definition and benefits

What services are offered by data centres? 

Modern colocation facilities offer a wide range of services designed to keep IT infrastructure secure, connected and always available.

These include: 

• Physical Security: Biometric access controls, CCTV surveillance and on-site security teams protect critical assets from unauthorised access.
• Redundant Power Supply: Dual feeds, UPS systems and backup generators maintain uptime even during grid failures.
• Network Connectivity: High-speed, carrier-neutral links with diverse paths ensure reliable data transfer and cloud access.
• Climate Control: Advanced cooling systems maintain optimum temperatures, with backup chillers for redundancy.
• 24/7 Monitoring and Support: Skilled engineers provide round-the-clock oversight and rapid response to incidents.
• Managed Colocation Services: Many providers offer remote hands, hardware installs and monitoring support to reduce on-site visits.
• Robust Infrastructure: Purpose-built facilities with redundant power, cooling and security deliver high availability and performance for critical workloads.
• Scalability and Flexibility: Easily expand server capacity or add new technologies without the cost and complexity of building on-premises space.
• Enhanced Connectivity: Access to carrier-neutral connectivity and direct cloud on-ramps supports real-time applications and hybrid IT.
• Cost Savings: Sharing infrastructure with other tenants reduces capital expenditure and operational costs.
• Data Security and Compliance: Providers implement strict physical and logical controls, supporting colocation security and helping businesses meet regulatory requirements.
• Focus on Core Competencies: Free internal teams to concentrate on innovation and strategic initiatives instead of running server rooms.
• Power: Redundant utility feeds, UPS systems, and backup generators protect against outages.
• Cooling: Advanced cooling systems maintain optimal temperatures, with backup chillers for redundancy.
• Security: Access controls, biometric scanners, CCTV surveillance, and on-site security personnel protect sensitive equipment and data.
• Redundant Paths: Multiple network routes eliminate single points of failure.
• Carrier Choice: The ability to select from multiple providers ensures competitive pricing and performance.
• Cabinet and Rack Space: Add or remove capacity without major disruption.
• Managed Colocation: Some providers offer remote hands, patching, and monitoring so businesses can reduce on-site visits while retaining hardware control.

Why Colocation: Key Benefits for Businesses

For organisations that rely on always-on systems and growing data volumes, colocation provides a practical way to secure infrastructure without the cost of building and running a private facility.

Key benefits of colocation for businesses include: 

What are the key features of colocation services?

Colocation services provide the essential components businesses need to build a robust and dependable IT environment. These features are standard across modern colocation facilities, forming the backbone of reliable colocation hosting services.

Physical Infrastructure
Colocation facilities are purpose-built with enterprise-grade equipment to ensure reliability and efficiency.

Network Connectivity
Carrier-neutral facilities provide redundant, high-speed network links for seamless data transfer.

Scalability and Flexibility
Businesses can scale rack space, power, and bandwidth as their needs change.

These features define the best colocation services, giving businesses a reliable foundation for scalable, long-term IT growth.

  

Best Colocation Provider: How to Choose

A colocation provider is the company that operates the facility, delivering power, cooling, connectivity and security while you manage your hardware. When comparing top colocation providers, use this table as a side-by-side checklist to select the partner that best meets your technical, security, and compliance needs.

Criteria	What to Check	Why It Matters
Location & Connectivity	Proximity to your IT team, transport links, diverse carriers, local peering	Reduces travel time, enables low latency access
Reputation & Track Record	Customer case studies, uptime history	Confirms reliability and service quality
Certifications & Compliance	ISO 27001, SOC 2, GDPR adherence	Ensures security and regulatory alignment
SLAs & Support	Uptime guarantees, response times, maintenance windows	Defines service expectations and risk
Pricing & Contract Terms	Space, power, connectivity costs, scalability options, clear colocation agreement	Prevents hidden costs and locks, supports future growth
Security & Environment	Access controls, CCTV, fire suppression, monitoring	Protects physical assets and ensures resilience

Colocation best practices

By following best practices and working in partnership with your provider, you can maximise the benefits of colocation and ensure seamless operations within the data centre environment.

Optimising Services for Efficiency

• Capacity Planning: Size resources for current and future needs to avoid over- or under-provisioning.
• Hardware Selection: Choose energy-efficient, high-performance servers to minimise power draw.
• Cable Management: Organise and label cables to improve airflow and simplify troubleshooting.
• Regular Audits: Review power, cooling, and utilisation to identify efficiency improvements.
  

Redundancy & Disaster Recovery

• Redundant Power & Cooling: Use dual power feeds, UPS, and backup generators to ensure continuity.
• Network Redundancy: Establish multiple diverse carrier connections to eliminate single points of failure.
• Data Protection: Combine regular backups with off-site replication for rapid recovery.
• Testing Plans: Regularly test disaster recovery processes to confirm readiness.

Monitoring & Management

• Remote Monitoring: Track power, cooling, and network metrics proactively.
• Security Audits: Validate access controls, surveillance, and logging.
• Incident Response: Define clear escalation paths for urgent support requests.
• Managed Colocation Services: Consider provider remote-hands support to reduce on-site visits and speed up interventions.

Case studies: Successful colocation implementations

It’s always helpful to see how the theory translates into real-life business contexts. Here are some real-world examples and case studies of businesses that have benefited from colocation.

Flexible scalability and efficiency through modern colocation

Ramsac, a UK-based business, partnered with Pulsant to meet its need for a scalable colocation provider that could support long-term growth. After evaluating options, Ramsac selected Pulsant's Reading South data centre which offered modern, efficient infrastructure at a lower cost compared to other data centres they had visited.

By migrating from its existing provider to Pulsant, Ramsac gained the flexibility and capacity to adapt to client needs and scale efficiently.

Key highlights:

• Pulsant's Reading facility offered modern, efficient infrastructure at lower cost compared to other data centres
• Migration delivered flexibility and scalability to meet diverse client needs
• Pulsant's responsive service enables more efficient infrastructure management 
• Partnership provides foundation for Ramsac's continued expansion and success
  
• Nitrado sought scalable, cost-effective UK data centre with top network performance 
• Pulsant's Reading South offered attractive pricing, easy scalability, DDoS protection
• Migration delivered ultra-low latency, consistent jitter connections for gaming
• Pulsant provided full consultancy and support for Nitrado's evolving needs
• Partnership enables Nitrado to cost-effectively scale UK operations and meet customer needs
  
• Edge computing: Edge computing brings processing closer to users and devices. Colocation providers are expanding services to edge locations, creating micro data centres and PoPs to support low latency applications. This growth is driving new opportunities for colocation in cloud computing, where hybrid models connect cloud resources with edge workloads.
• AI & Machine Learning: AI workloads require high-density racks and GPU capacity. Expect more facilities to offer AI-ready power and cooling configurations.
• Internet of Things (IoT): As IoT devices proliferate, colocation will play a key role in hosting data aggregation and analytics platforms with secure, resilient infrastructure.
• Renewable Energy: More facilities are powered by solar, wind, or renewable PPAs to reduce carbon footprints.
• Efficient Cooling: Techniques like liquid cooling and free-air systems improve energy efficiency.
• Energy-Efficient Hardware: Providers are encouraging use of lower-power servers and networking gear.
• Circular Economy Practices: Recycling and reuse programmes minimise electronic waste.

Scalable UK growth through low latency connectivity

Nitrado, a German hosting provider, initially entered the UK market with a small deployment in London in 2015. Seeking a scalable, cost-effective data centre with high network performance, Nitrado migrated to Pulsant's Reading South facility. Pulsant offered attractive per-rack pricing, unlimited support, easy scalability up to 7kW per cabinet, DDoS protection, low latency connections, and network stability.

By moving to Reading South, Nitrado gained the critical low latency, consistent jitter connectivity its gaming customers require. Pulsant provided full local support and consultancy to meet Nitrado's evolving needs while managing costs and delivery. 

Key highlights:

Future trends in colocation

Colocation continues to transform to support new technologies and sustainability goals. The future of colocation will be shaped by the following trends:

Emerging technologies

Sustainability & Green Initiatives

These trends signal a future where colocation becomes even more integrated with cloud strategies and sustainability commitments, making now the right time to plan a facility strategy that supports growth.

Overview and final thoughts

Colocation remains one of the most effective ways for businesses to run secure, scalable IT infrastructure without the cost and complexity of managing their own facility.

Pulsant is recognised as one of the UK’s best colocation providers, operating a network of 14 interconnected, edge-ready data centres across the country. Our facilities deliver carrier-neutral connectivity, industry-leading uptime, and strong compliance standards, everything needed to support hybrid IT strategies and future growth.

Contact us to compare Pulsant colocation packages and request a tailored quote. Our team can help you find the right mix of racks, power and connectivity to match your workloads and expansion plans.