Data Center Architecture: Spaces, Layers and Layout
Data center architecture is the physical organisation of the building. It follows the power and cooling paths, and mistakes in layout are hard to fix later.
The main spaces
| Space | Purpose |
|---|---|
| White space | Data halls with racks |
| Electrical rooms | Transformers, switchgear, UPS and distribution |
| Battery rooms | UPS batteries, with their own ventilation and safety rules |
| Generator area and fuel | Backup generation and fuel storage |
| Mechanical plant | Chillers, pumps, air handling and heat rejection |
| Telecom entrance and meet-me rooms | Connectivity into the facility |
| Support | Security, offices, loading, storage |
The layout follows the paths
- Power: utility to MV and LV rooms, through UPS to the halls, with redundant paths separated. See MV/LV distribution.
- Cooling: plant spaces connect to halls by pipe or duct routes. See cooling systems.
- Expansion: halls and rooms are planned in phases, with space and routes reserved for later phases.
What to check
- Physical separation of redundant paths.
- Access for equipment delivery and replacement.
- Floor loading for heavy items such as batteries and transformers.
- Fire compartments and cable penetration routes. See NFPA 75 and 76.
Basics: what is a data center.
Written by the Vision Matrix Institute editorial team. Worked examples use stated, illustrative assumptions; check them against your project data, the applicable standards and manufacturer datasheets before use.
Frequently Asked Questions
What are the main spaces in a data center?
The white space (data halls), electrical rooms, battery rooms, generator and fuel areas, mechanical plant spaces, telecommunications entrance rooms, and support areas such as offices and loading.
What is white space?
The area where IT equipment racks are installed. The surrounding technical spaces are sometimes called grey space.
How does the layout follow redundancy?
Redundant paths are usually physically separated, so a fire or fault in one room does not take out both. This shapes where rooms and routes sit.
Why does layout matter so much?
It is hard to change once built. Cable and pipe routes, access, floor loading and expansion all depend on it.
Want to learn this properly?
This topic is covered in depth in our Electrical Design – Data Center Specialist program.
Ask us on WhatsAppLearn to do this on a full project in the Electrical Design – Data Center Specialist program, or read the data center design guide.