Patent ID: 7035980
Filing Date: 2006-04-25
Classification: G06F

Abstract:
1. An information processing system comprising: a host processing device; an external storage device that uses one or more physical devices to store data that are subjects of input/output requests from the host processing device; and a control device intervening between the host processing device and the external storage device and that controls data receiving and sending, wherein the control device determines whether an input/output request for a data block from the host processing device concerns a specific data space within a group of limited number of data spaces and determines a magnitude of impact that a look-ahead processing performed at present have on other input/output requests, and controls to load more data blocks than the data block that is a subject of the input/output request onto a cache memory depending on a determination result when transferring to the host processing device the data block that is the subject of the input/output request from the host processing device.