Data Center Types and Design Standards: An Essential Guide

The evolution of technology has given rise to different types of data centers, each with specific characteristics and advantages. In addition, there are international standards that guide their design and operation to guarantee reliability, security, and efficiency.

Types of Data Centers:

• Traditional Data Centers (On-premise): These are those located on the company’s own premises. They remain very relevant, especially for organizations that require strict control over the security, location, and governance of their data. Many companies adopt a hybrid approach, combining their traditional data centers with public cloud services to get the best of both worlds: control and flexibility.

• Modular Data Centers: They are smaller and more efficient facilities that use prefabricated or modular components. These modules are manufactured, integrated, and tested off-site and delivered ready to be assembled. This method accelerates construction, reduces risks and overall costs, and enables faster implementation. They can include thermal management, power protection and distribution, and security subsystems. They are ideal for fast implementation in almost any location.

• Cloud Data Centers: In this type of data center, the entire infrastructure (servers, switches, routers, etc.) is virtualized and deployed “in cloud format”. This means that resources can be scaled on demand, offering great flexibility. A cloud data center moves IT infrastructure off the client’s physical premises.

Design Standards and Certifications:

To ensure quality, reliability, and efficiency, the design of data centers is governed by several standards and compliance frameworks. These provide a structure that guides all operations:

• Uptime Institute Tier Standard: This standard classifies the reliability and redundancy of a data center into four availability levels. It focuses on the resilience capacity of the data center and offers guidelines for the design, construction, and commissioning phases.

◦ Tier 1 (Basic): Offers 99.671% availability. There can be interruptions due to planned or unplanned maintenance. It does not have redundant components in the electrical or cooling distribution. The infrastructure needs to be out of service at least once a year.

◦ Tier 2 (Redundant): With 99.741% availability. It is less susceptible to interruptions and has redundant components (N plus 1). Although it has auxiliary generators and UPS, its electrical and cooling distribution lines may require a service interruption for maintenance.

◦ Tier 3 (Concurrently Maintainable): Reaches 99.982% availability. It allows planned maintenance activities without affecting the computing service, although unplanned events can still cause outages. It has multiple electrical and cooling distribution lines, with sufficient capacity to operate one while maintaining another.

◦ Tier 4 (Fault Tolerant): Offers the maximum availability, 99.995%. It is designed to allow planned maintenance without affecting critical services and can withstand at least one unplanned event (such as a major failure) with no impact on the load. It has multiple distribution lines and multiple redundant components (2 times (N plus 1)). It is important to note that the Uptime Institute has only certified a limited number of data centers at Tier 3 and 4 levels worldwide, which means that often the Tier advertising by vendors may not imply official certification.

• ANSI/TIA-942: This standard focuses on the physical aspects of the data center, especially the telecommunications infrastructure. It addresses elements such as site location, overall architecture, electrical and mechanical systems, fire detection, and security.

• EN 50600: It is a transnational European-level standard that adopts a comprehensive or holistic approach to the planning, construction, and operation of a data center.

In addition to these standards, there are green efficiency certifications, such as LEED (Leadership in Energy and Environmental Design), Green Globes, and Energy Star. These seek to reduce energy consumption and operating costs. Complying with these standards and obtaining certifications demonstrates a commitment to efficiency and sustainability, which is increasingly relevant given the high energy demand of data centers.

Compliance with regulatory frameworks such as ISO 27001, SOC 2, HIPAA, or SOX, depending on the sector, is also fundamental to guarantee data security and availability. Periodic audits are essential to validate this compliance.