Knowledge Center

Data Center Design Guide: Core Principles

By RON-LY Solutions Engineering Team · Published August 28, 2026

Short answer

A well-designed data center gets power, cooling, cabling, and monitoring right from the start — retrofitting any of these after the fact is significantly more disruptive and expensive.

Key architecture elements

  • Power: UPS sizing and redundancy matched to actual critical load, not guessed
  • Cooling: capacity planned for peak load plus growth headroom, not just current day-one load
  • Structured cabling: labeled, documented, and planned for the rack layout — not run ad-hoc as needs arise
  • Monitoring: environmental (temperature/humidity) and power monitoring from day one, not added after an incident

Common mistakes

  • Sizing cooling for current load with no growth margin
  • Undocumented cabling that makes troubleshooting slow
  • No environmental monitoring until after a preventable outage