Patent ID: 6691177
Filing Date: 2004-02-10
Classification: G06F,Y10S

Abstract:
A file input/output control system comprising:a plurality of first computers each having a plurality of disks and connected to a network; and at least one second computer connected to the network for accessing the plurality of disks connected to the plurality of first computers, said second computer comprises: a retriever for retrieving a plurality of first access requests issued from a plurality of processes of one or a plurality of applications and comparing the plurality of first access requests with correspondence relation defining information to thereby confirm that the plurality of first access requests are accesses to a plurality of disks, the correspondence relation defining information being entered by a user in advance and indicating a correspondence relation between the plurality of disks in said first computers and each of a plurality of regions in a file accessed by said second computer, a scheduler for creating a plurality of second access requests to the plurality of disks from a plurality of first access requests confirmed to be accesses to a plurality of disks, in accordance with said correspondence relation defining information, and transmitting the plurality of second access requests to the network, a cache memory, and a cache controller, wherein said correspondence relation defining information further indicates a request for using a cache memory for accessing data in a region in a file, wherein whether said cache memory is used is decided according to said correspondence relation defining information, and wherein said cache controller accesses said cache memory for accessing data, when the request for using a cache memory for accessing a region storing said data is indicated in said correspondence relation defining information.