Computer system for controlling allocation of physical links and method thereof

摘要

The computer system of the present invention has a plurality of SAS target devices (114), an SAS initiator device (200), and a service delivery subsystem (130) that is connected to each SAS target device by means of a physical link (108) that is physical wiring and connected to the SAS initiator device by means of a wide link (120) constituted by a plurality of physical links. The SAS initiator device controls how many physical links in the wide link are allocated to a particular SAS target device, whereby access from the SAS initiator device to the SAS target device is made via a physical link that is allocated to the SAS target device and is not made via a physical link that is not allocated to the SAS target device.