Patent ID: 7586741

Claim:
A disk array apparatus, comprising: a plural number of units, each containing at least one disk drive into an inside of a housing; and a rack for containing the plural number of units within an inside thereof, wherein said unit comprises a controller for controlling each of said at least one disk drive within said unit and an air-blow fan, as well as, a liquid cooling system having, a pump for transmitting a liquid coolant, a radiator for transmitting heat absorbed into the liquid coolant into an outside air, and pipes for connecting those, said liquid cooling system is connected thermally with, at least said controller for said at least one disk drive and a part of said unit adjacent said at least one disk drive for enabling cooling of said at least one disk drive, and further a rotation speed of said pump is controlled depending on a detection signal from a temperature sensor, which is provided in a part of said liquid cooling system, for detecting a temperature of the liquid coolant, which changes in response to electric power consumed within said controller and said at least one disk drive of said plural number of units, wherein the rotation speed of said pump is controlled independently of any other control of said disk array apparatus including control of said air-blow fan.