Fiber channel connection storage controller

In a computer system including a host computer, a storage device having a magnetic disk drive, and a fiber channel connection storage controller employing an ANSIX3TT11-standardized fiber channel as an interface between the host computer and the storage device, the magnetic disk drive being operable under control of the fiber connection storage controller, the fiber channel connection storage controller comprising;

• N_Port Name information which is information as issued from the host computer to distinctly identify the host computer is preinstalled in the storage control device prior to startup of the host computer;
• the storage control device has means for permanently storing therein the information until this information will be reset;
• after startup of the host computer, the host computer generates and issues to the storage control device a frame storing therein N_Port_Name information;
• the storage control device has means for comparing, upon receipt of this information, the N_Port_Name information distinctly identifying the host computer as already set and stored therein to the N_Port_Name information presently stored in a received frame;
• a fiber channel connection storage control device has means for eliminating unauthorized access from the host computer in a way such that when the comparison results in match, processing based on an instruction of the frame is continued, and when failed to match, a link service reject (LS_RJT) frame for rejection of the received frame is returned to the host computer;
• and, the fiber channel connection storage control device also has means for setting N_Port_Name information items greater in number than or equal to a physical number of host interfaces (ports) as owned by the storage control device, that is, means for setting a plurality of N_Port_Name information items per port, and means for deterring unauthorized access from the host computer even for a multi-logical path configuration upon a fiber channel Fabric connection.

In a computer system including a host computer, a storage device having a magnetic disk drive;

• and a fiber channel connection storage controller employing an ANSIX3TT11-standardized fiber channel as an interface between the host computer and the storage device, the magnetic disk drive being operable under control of the fiber connection storage controller, the fiber channel connection storage controller comprising;
• N_Port Name information which is information as issued from the host computer to distinctly identify the host computer is preinstalled in the storage control device prior to startup of the host computer;
• the storage control device has means for permanently storing therein the information until this information will be reset;
• after startup of the host computer, the host computer generates and issues to the storage control device a frame storing therein N_Port_Name information;
• the storage control device has means for comparing, upon receipt of this information, the N_Port_Name information distinctly identifying the host computer as already set and stored therein to the N_Port_Name information presently stored in a received frame;
• a fiber channel connection storage control device has means for eliminating unauthorized access from the host computer in a way such that when the comparison results in match, processing based on an instruction of the frame is continued, and when failed to match, a link service reject (LS_RJT) frame for rejection of the received frame is returned to the host computer;
• and, the fiber channel connection storage control device also has means for setting N_Port_Name information items greater in number than or equal to a physical number of host interfaces (ports) as owned by the storage control device, that is, means for setting a plurality of N_Port_Name information items per port, and means for deterring unauthorized access from the host computer even for a multi-logical path configuration upon a fiber channel Fabric connection;
• and
• further characterized in that in a system having many magnetic disk volumes as in a disk array device under control of the storage control device and also having a plurality of channel path routes, the fiber channel connection storage control device has means for performing management, in a one-to-one correspondence relationship, of storage regions including a logical unit number (LUN)-based logical disk extent, a RAID group-based logical disk extent, physical volume extent and the like, ports of the storage control device, and the N_Port_Name information of an accessible host computer, and further having means for deterring unauthorized access with respect to each storage region.