How does temperature monitoring help capacity planning?

The air conditioners or cooling system in your server room or datacentre is designed to deliver a set kW of cooling. As more servers and racks are added to a facility, the cooling load increases and places greater demand on the air conditioning system. Monitoring server room and datacentre temperatures provides ambient environment data that can help to assess (a) whether more IT server load can be added to the room and (b) the effect of the additional IT servers on the cooling system when commissioned and running.