Choosing a Server Chassis: 1U vs 2U vs 4U, Airflow, and Drive Bay Layout
The rack article on this site covers the cabinet: depth, rails, PDU, cable management. This one covers the thing that actually goes into the rack, the chassis itself, and it’s a separate decision with its own traps. A rack sized right for a server that turns out to have the wrong airflow direction, too few drive bays, or a riser that won’t clear a double-width GPU is still a wasted purchase, just one layer in from the one the rack article warns about. ...