Rack-mounting.
	Cabinets or open “Telco” racks? Cabinets: Pros & Cons Solve two problems. The locked door & The rack. Best for a small server installation. Choose carefully, with a thought toward accessibility. Can present cooling problems. Expensive. Hard physical limit. Telco Racks: Pros & Cons Easier to work with: accessible. cable management. etc. Less expensive, including components. Infinitely scalable. Require a room (the locked door.) Some purpose-built rack-mount servers (Dell for example) won’t work.