The amount of heat dissipation all depends on the Data Center layout, equipment, and the blocking of unused RU’s.

In a Hot aisle / Cold Aisle Data Center (60 F Cold Aisle), this cabinet has been loaded up with 7KW of load and the equipment stayed cool.

Questions:

• What type of Equipment is going into the cabinet (1 & 2 RU or Blade Severs)
• Performance of the Equipment (How much CFM do they move?)
• Where the equipment is installed in the cabinet (Spread out, bottom bias, top bias, etc)
• Blocking panels in place on all unused RU’s
• Cable management on the back side (Neatly done to prevent any hot exhaust blockage)
• Actual temperature of the Cold aisle and amount of CFM available to the cabinet (Max temp usually is around 75 to 80 F before failure occurs)
• Delta T in F (Most equipment is designed around 20 – 30 Delta T F) {Difference between the intake and out temperatures)
• Data Center configuration (Hot Aisle / Cold Aisle is the standard)

Hoffman exceeds all Server manufactures (Dell, IBM, HP, Sun, etc) for “Open Space” (over 65% open to cold air) which allows cold air to enter the equipment.

All cabinet manufacturers would need answers to the exact same questions in order to provide how much heat dissipation would take place. The equipment and the Data Center heavily influence the heat load dissipation.

Any Cabinet manufacturer who provides heat dissipation with out consideration to the above questions and perhaps others questions is being fraudulent in their response. They simply can not guarantee that the equipment will not over heat unless they understand these parameters.