https://community.hpe.com/t5/bladesystem-general/cold-air-coming-through/m-p/764#M20396 The OA/s will always run the fans at the 'optimum' level for the heat-clearing required. The fans are very efficient so don't worry about them turning when you're not busy. Phil. Sat, 09 Aug 2008 21:00:00 GMT chopper3 2008-08-09T21:00:00Z https://community.hpe.com/t5/bladesystem-general/cold-air-coming-through/m-p/763#M20395 Hi folks, We have an issue that when we have the majority of blades turned off in a chassis (or even all of them!) the fans still run at 30-40%. This means we're pumping cold air into the hot aisle... Is this expected behaviour? Simon. Fri, 17 Aug 2007 10:57:00 GMT https://community.hpe.com/t5/bladesystem-general/cold-air-coming-through/m-p/763#M20395 violetlight 2007-08-17T10:57:00Z https://community.hpe.com/t5/bladesystem-general/cold-air-coming-through/m-p/764#M20396 The OA/s will always run the fans at the 'optimum' level for the heat-clearing required. The fans are very efficient so don't worry about them turning when you're not busy. Phil. Sat, 09 Aug 2008 21:00:00 GMT https://community.hpe.com/t5/bladesystem-general/cold-air-coming-through/m-p/764#M20396 chopper3 2008-08-09T21:00:00Z