What is the primary purpose of a cable tray in a data centre?

The primary purpose of a cable tray in a data centre is to organize and support cable routing. Cable trays are specifically designed to manage and facilitate the routing of various types of cables, such as power, data, and communications cables. They help maintain a neat and orderly environment by allowing for structured cable pathways, which reduces the risk of cable damage and tangling and contributes to easier maintenance and troubleshooting.

By implementing cable trays, data centre personnel can better manage airflow and ensure that vital systems remain accessible. Moreover, proper organization contributes to safety protocols by preventing hazards associated with unorganized cabling, such as tripping hazards or fires.

In contrast, the other options do not align with the primary function of cable trays. While backup batteries, server cooling, and power outlets are important components in a data centre, they do not pertain to the specific role of cable trays, which focuses on cable management.