Patent ID: 7305670

Claim:
A method of installing software on a storage device controlling apparatus, said method comprising: writing software for enabling a file access processing section of a channel controller of the storage device controlling apparatus to function, wherein said storage device controlling apparatus comprises: a plurality of channel controllers, each having a circuit board on which are formed a file access processing section receiving requests to input and output data in files as units from an information processing apparatus via a first network and an I/O processor outputting I/O requests corresponding to said requests to input and output data to a storage device; a plurality of disk controllers executing input and output of data into and from said storage device in response to the I/O requests sent from said I/O processor; and a second network coupling said plurality of channel controllers and said plurality of disk controllers so as to be able to communicate with each other, wherein said software is written into said storage device by communicating with said channel controller via said second network.