Patent ID: 7117276
Filing Date: 2006-10-03
Classification: G06F

Abstract:
1. A disk array device comprising: a plurality of hard disk drives; at least one channel control section having a plurality of ports that are connectable to at least one information processing device via cables, and that receives data input/output requests from the least one information processing device to the plurality of hard disk drives; at least one disk control section that is communicatably connected to the plurality of hard disk drives and that sends data input/output requests to the plurality of hard disk drives based on the data input/output requests to the plurality of hard disk drives that are received by the at least one channel control section; and a shared memory that is accessible by the at least one channel control section and the at least one disk control section for reading and writing data therein, wherein the shared memory stores a port control table that sets control information indicating whether the plurality of ports are permitted for use, and the at least one channel control section refers to the control information set in the port control table, and wherein the number of ports in use is compared to the number of ports available for use; wherein when the number of ports in use is less than the number of ports available for use, the at least one channel control section responds to a connection request received from the at least one information processing device, and when the number of ports in use is equal to the number of ports available for use, the at least one channel control section does not respond to the connection request.