To prevent a hot spot from being generated by adjusting the amount of the supply of cook air blown to the front of a rack according to the amount of the generated heat of the rack and reducing power to supply cool air.
There are provided a server utilization information conversion unit 22 that inputs in advance a straight line A representing a relationship between the server utilization rate and the amount of heat generated in the server, finds and inputs in advance for each rack the maximum airflow volume of a floor fan 4 required to cool down the temperature to a target temperature by removing the maximum amount of heat generated in a rack 7 when each server 6 of the rack 7 is at its maximum utilization rate, and controls the number of rotation of the floor fan 4 of each rack 7 based on a required airflow volume signal obtained by multiplying the maximum airflow volume of the rack 7 by an average amount of the generated heat of the rack obtained from an average utilization rate for each rack found from the utilization rate of each server 6 taken in from a management server 21, and a temperature correction calculation unit 28 that corrects the required airflow volume signal when a suction detection temperature of an upper thermometer 26 provided in a position corresponding to the suction inlet of the server in the uppermost shelf of the rack 7 is not lower than a set suction temperature.
SUZUKI YASUSHI
OKADA KEIICHI
UENO SHIGEO
KINJO HIROSHI
NEC CORP
NEC FACILITIES LTD
| JP2009174726A | 2009-08-06 | |||
| JP2007249719A | 2007-09-27 | |||
| JP2000036681A | 2000-02-02 | |||
| JP2009217500A | 2009-09-24 | |||
| JP2009264598A | 2009-11-12 | |||
| JP2010078218A | 2010-04-08 | |||
| JP2009140421A | 2009-06-25 | |||
| JP2008002690A | 2008-01-10 | |||
| JP2010086450A | 2010-04-15 | |||
| JP2010015192A | 2010-01-21 |
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