Ensure that inlet air enters at the front of the server and exits from the back.
Ensure that the server ventilation openings used for intake and outflow of air provide an open area that is at least 60% of the open area perforations across the front and rear of the server. This 60% minimum open area equates to the following dimensions, depending on the server model:
Allow a minimum of 5 mm (0.2 in.) clearance at the front of the system and 80 mm (3.1 in.) at the rear of the server when mounted. These clearance values are based on the inlet and exhaust impedance (available open area). These values also assume a uniform distribution of the open area across the inlet and exhaust areas. Use greater clearance values to improve cooling performance.
Note - The combination of inlet and exhaust restrictions such as cabinet doors, and the spacing of the server from the doors can affect the cooling performance of the server. You must evaluate the effect of these criteria.
Take care to prevent recirculation of exhaust air within a rack or cabinet.
Manage cables to minimize interfering with the server exhaust vent.
Sun SPARC Enterprise T5140 and T5240 Servers Getting Started Guide
Sun SPARC Enterprise T5140 and T5240 Servers Getting Started Guide (DC)
Sun SPARC Enterprise T5140 and T5240 Servers Service Manual