computer room air handler (CRAH)
This definition is part of our Essential Guide: Building with modern data center design in mind
A computer room air handler (CRAH) is a device used frequently in data centers to deal with the heat produced by equipment. Unlike a computer room air conditioning (CRAC) unit that uses mechanical refrigeration to cool the air introduced to a data center, a CRAH uses fans, cooling coils and a water-chiller system to remove heat.
Experts agree: 5% load differential is key
But is that what you see in your organization’s power balance? Does another setup work better for you? Learn why our experts say the goal for data center power distribution is no more than a 5% load differential among phases.
This was last updated in May 2012
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