There are a number of very important decisions you will need to make when you are getting ready to buy a new server cabinet. The first one is to find a cabinet is going to be wide enough to fit your servers and will be deep enough to allow for all of the wiring, it must also be and capable of handling the weight of your servers. Beyond physical size, it is vital that the cabinet you choose be able to provide adequate cooling for all of the servers you will be putting in it.
What Happens If There is Not Enough Airflow in Your Server Cabinet
If you end up buying a server cabinet that does not provide for enough cooling airflow for the servers you intend to install in it, you are asking for trouble. This will cause all of your servers to run hot at the very least and shorten their natural lifespan. Depending on how short the airflow is, your servers may overheat and crash causing you to lose all of the data that they contain. The easiest way to avoid this is to buy a cabinet that offers plenty of ventilation.