When constructing a data center, the developer must understand key steps, including cost, site selection, site preparation, infrastructure design, planning and design, permits, and approvals, that are essential for a successful project.

The data center construction process should be planned thoughtfully, taking into account both current and future requirements.

Visualising each phase of building a data center is essential to fill in the gap between design and delivery.

Let us now understand the process of building a data center step by step.

6 Essential Steps to Build a Data Center: A Step-by-Step Guide

From the initial phase, the construction process involves several stages and planning. Data center construction and development include some key steps such as: 

1. Assessing the cost of developing a data center

2. Site selection and preparation

3. Designing infrastructure (power, cooling, security)

4. Building construction

5. Installation of IT equipment

6. Testing and commissioning

The goal of the above-mentioned steps is to create a secure, efficient, scalable, and future-proof IT infrastructure for data storage and processing requirements.

Assessing the Cost of Developing a Data Center

In 2025, the cost of building a data center ranges from USD 9 million to USD 15 million per Megawatt. This can vary depending on the data center type, location, and various other factors. Most data center construction costs are attributed to building out the facility’s critical capacity, such as power systems, cooling, servers, etc. An average cost breakdown is given below:

Site Selection and Preparation

Site selection and preparation of two different processes that are critical in laying the foundation of any data center.Let us understand in brief the procedure involved in data center site selection and preparation

Site Selection

Choosing the location for a data center is a crucial decision for data center firms. It establishes the foundation for resilience, security, and business continuity, especially in the face of natural disasters or other crisis events. Poor site selection might lead to data center failure. For example, an AT&T data center went offline during Hurricane Sandy, which caused the websites of the Huffington Post, Gawker, Buzzfeed, and Halifax to go down. Furthermore, selecting a suitable data center location depends on various criteria, including:

Power Availability

Electricity is a significant operating expense for data centers and their clients. Therefore, it is important to consider factors such as the data center's location in relation to the power grid, the age of the grid, and prices per kilowatt-hour.

Data center developers should consider utilizing renewable energy sources, such as wind or solar power. Moreover, the Power Usage Effectiveness (PUE) level of the data center should be less than 2. PUE is an important data center energy efficiency metric that measures a data center's power usage effectiveness. 

A stronger server uses more power than a weaker one. The more powerful your server is, the more energy it will require.

To ensure efficient and proper working of the power system of a data center it is important to have redundancy, and it is best to use two generators to create a backup for power.

Location

It is important to evaluate the occurrence rate of natural disasters (tornadoes, hurricanes, floods, fires, earthquakes, etc.) or potential human-induced risks (nearness to high-traffic zones like major highways or airports). Moderate climate locations that facilitate external cooling of the facility are beneficial. 

Disaster-prone regions and state advisories should be taken into consideration when selecting a location. Most governments provide comprehensive region-wise weather and climate data, as well as the propensity to disasters, which are also displayed using several criteria and colours. For example, red for highly prone, yellow for moderately prone, and green for safe zones.

Moreover, extreme temperatures, humidity, and weather patterns can affect the reliability and efficiency of data center operations. So, it is important to choose the right climate for your data center construction process.

Connectivity

Data center connectivity is another essential component. There are various connectivity factors that are taken into consideration during site selection. Sufficient bandwidth is required to handle data transfer and communication between servers, storage, and other devices. Low-latency regions should be preferred for fast data transfer.

Moreover, diverse routing should be adapted to minimize the risk of single points of failure. Multiple connections can also be used for this purpose as a double-check.

Some of the most trending locations for data center construction are Northern Virginia, Ashburn, Singapore, Phoenix in Arizona etc. These markets are hotspots for data centers, as they provide dense fiber-optic network connections and are due to their proximity to major network access points.

Additional factors

Additionally, site selection involves a lot of criteria:

• Cost of real estate 

• Cost of living for staff

• Property disputes

• Local construction expenses

• Land value

• Municipal incentives

• Sales tax rates

• Cost and availability of power

• Climate

• Possible transportation threats

• Proximity to the neighbours

• Available personnel 

• Disaster conditions

After the site selection, the contractor will prepare the location for a data center's development before work starts. Site type (raw land vs. pad site) determines the level of preparation required. Pad sites are unique pieces of land that have been reserved for data center development. 

These sites are often located within larger properties, including industrial or mixed-use parks. It is possible that pad sites already have the necessary physical infrastructure and environmental factors to develop data centers.

Site Preparation Procedures if the Land is Raw and Undeveloped

Grading, Leveling, and Clearing Land: Clearing the area of any existing structures, as well as any vegetation, is part of this process. It makes sure the building site is level as well.

Functional Markings: This stage involves finding and designating the places of existing utilities, such as water, power, gas, or phone lines so that they can't be disturbed.

Clearing the Way and Preparation: Preparation for the projected data center begins with soil testing, followed by foundation type selection, excavation, and laying the groundwork.

Stabilizing and Compacting Soil: Making sure the foundation is strong enough to hold the data center is this step's primary objective.

Gathering Support: The construction site office and storage rooms are temporary facilities that must be set up, and construction equipment must be assembled. It also includes setting up temporary utilities and, if needed, creating site access controls.

Designing Data Center Infrastructure 

The design of a data center's infrastructure is critical to its performance, efficiency, and reliability. Key aspects of data center infrastructure design include:

Power Systems

Designing power systems that can meet the data center's power requirements, including UPS systems, generators, and power distribution units (PDUs).

Data centers currently utilize AC UPS systems with Valve-Regulated Lead-Acid (VRLA) batteries for power backup. However, lithium-ion batteries are gaining popularity due to their longer lifespan and reduced cooling costs.

Although emerging trends indicate that lithium-ion batteries are expected to become the preferred choice over VRLA batteries in many data centers due to their benefits and decreasing prices. According to a whitepaper by Vertiv, they could become the majority choice by 2025.

Cooling Systems

Selecting cooling systems that can efficiently remove heat from the data center, such as air conditioning, evaporative cooling, or liquid cooling.

Active rear door cooling has emerged as a highly efficient solution for server racks with a power rating of up to 50 kW. This approach utilizes the equipment rack as a containment system, with rear-door chilled-water systems removing heat before the air exits the rack. Some of the data center cooling companies and their cooling system products are given below:

Security measures

Implementing robust security measures, including biometric authentication, surveillance, and access controls. Some of the major products ensuring the safety and security are given below:

Checklist for Design Evaluation

Starting a data center design project can be challenging, but most projects involve a similar set of considerations. 

Let's consider a comprehensive checklist for ensuring optimal data center design.

1. Is the data center design as simple and straightforward as practical?

2. Does the design provide adequate power and cooling resources?

3.  Does it allow for sufficient staging and storage?

4.  Does it provide an acceptable level of physical security?

5.  Does the design allow for adequate spacing between systems and rows?

6.   Does it meet all the stated requirements?

7.  Does it have all the necessary levels of flexibility or modularity?

8.  Is the design scalable enough to accommodate future or anticipated growth?

9.  Computational fluid dynamics (CFD) modeling included in the design?

10. Does the design include floor-weight distribution data for raised floors?

11. Is the design within cost or budget limitations?

Building Construction

MEP ( Mechanical, Engineering, and Plumbing)

Mechanical, engineering and plumbing ( MEP) is an important aspect in building construction of data centers. The installation of necessary MEP supports the data center infrastructure better.

Visualization and Layout Preparation

Data center building construction also includes some key aspects such as designing a facility layout or a blueprint that ensures efficient air flow, cable management, water pipelines, etc.

Selecting the Right Material

Moreover, selecting the right material for better durability in sustainability is also an essential aspect. Several important features, such as raised flooring, fire separation systems, power systems, and water supply systems, should be incorporated to facilitate seamless operations.

Why is concrete better as a building material than steel?

Considered the best building material as it serves several benefits including

• More fire-resistant than steel

• Option to use pre-cast/ tilt-up construction method, which is not available if steel is used

• Strong against natural disasters as compared to steel

Despite the widespread use of the above building material, people are also actively switching to greener alternatives, such as using materials made from recycled matter and utilizing sustainable wood for building construction.

Additionally, data center developers utilize green alternatives for insulation, such as cellulose or spray foam insulation techniques. The use of organic paints and solar panels as sustainable energy sources is also gaining widespread popularity.

Some of the top data center construction companies of 2025 are listed below

Installation of IT Equipment

The installation of IT equipment is a critical step in data center construction.Let us now look at some of the key aspects of the IT equipment installation process.

Deploying Servers and Storage Systems: Installing servers, storage systems, and network equipment in the data center.

Configuring and Cabling Equipment: Configuring equipment for optimal performance, security, and efficiency. This includes cabling, IP addressing, and setting up network protocols.

Ensuring Compatibility: Verifying that equipment is compatible with existing infrastructure, systems, and applications.

Server Rack and Stack Configuration: Organizing equipment in the server room, ensuring proper airflow, cable management, and easy maintenance access.

Power Distribution: Connecting equipment to power distribution units (PDUs), ensuring reliable and efficient power delivery.

Network Connectivity: Establishing network connections, including fiber optic cables, Ethernet cables, and network switches.

Testing and Validation: Testing equipment to ensure its functioning as expected, validating performance, and identifying potential issues.

Testing and Commissioning

Testing and commissioning is another critical phase in the data center construction process that ensures the data centre facilities meet required standards for performance and increased reliability. 

The testing and commissioning process involves a series of thorough checks and tests to verify that all the systems, including the IT equipment, are functioning correctly. 

Some of the key components of the testing and commissioning phase of data center construction are: 

System integration testing: it checks that all systems, including the equipment, power, cooling, server, etc, are working properly in sync or not 

Performance testing: it involves evaluating the data centres ability to handle workloads and unexpected traffic. It assesses how will the data centre can work in stressful conditions

Security testing: this process involves identifying the weak points and ensuring that security measures that are incorporated in the data centre are apt or not.

Reduced downtime checks: this process focuses on minimising the risk of unexpected outage and increased down time. It is essential for any data centre to operate with maximum uptime to minimize downtime and loss.

What Are the Necessary Regulatory Frameworks and Standards Required for Data Center Construction?

Data center construction requires adherence to various regulatory frameworks and standards to ensure operational efficiency, security, and the development of trust among its customers.

Industry Standards

Uptime Institute's Tier Standard:  A performance-based rating system that evaluates data center resilience and performance across four tiers, focusing on redundancy and reliability.

ANSI/TIA-942: Telecommunications Infrastructure Standard for Data Centers, covering cabling, network infrastructure, and redundancy.

EN 50600: European standard for data centers, outlining requirements for design, construction, and operation, including power supply, environmental control, and security.

ANSI/BICSI 002-2014: Standard for data center design and construction, covering planning, design, construction, and commissioning.

Regulatory Standards

HIPAA (Health Insurance Portability and Accountability Act): Regulates the handling of sensitive patient data in healthcare.

SOX (Sarbanes-Oxley): Protects investors by ensuring the accuracy and reliability of corporate disclosures.

GLBA (Gramm-Leach-bliley Act): Mandates safeguards for sensitive data in financial institutions.

PCI-DSS (Payment Card Industry Data Security Standard): Ensures secure handling of payment card information.

Operational Standards

ISO 9000: Quality management system standard.

ISO 14000: Environmental management system standard.

ISO 27001: Information security management system standard.

SSAE 18 SOC 1: Assurance report on controls at a service organization.

Other Essential Compliance and Standards

ASHRAE Standards: Guidelines for thermal management and energy efficiency in data centers.

Local Building Codes: Compliance with local regulations and building codes is essential.

Environmental Regulations: Data centers must follow certain environmental regulations and sustainability standards.

Conclusion

Even after ensuring all the above processes are aligned, there can be instances of unforeseen disruption and technical errors resulting in system failure and increased downtime. 

Even one hour of downtime costs millions to the data center facility, it should not be ignored that managing and building a data center construction process is a technical and complex job. It is better to let the experts do their work and hope for the best outcome.

It is also important to develop backup and sustainable energy sources that will ultimately contribute to efficient functioning and increased output.

Know all about the Upcoming Data Center Projects Around you! 

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