Storage subsystem and storage controller

Electrical computers and digital processing systems: support – Digital data processing system initialization or configuration

Reexamination Certificate

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Details

C713S002000, C709S213000, C710S010000, C710S056000, C711S111000, C711S112000, C711S152000, C711S164000

Reexamination Certificate

active

07461245

ABSTRACT:
A storage subsystem and a storage controller adapted to take advantage of high data transfer rates of fiber channels while offering enhanced reliability and availability and capable of connecting with a plurality of host computers having multiple different interfaces. A loop is provided to serve as a common loop channel having fiber channel interfaces. Host interface controllers (HIFC) connected to host computers having different interfaces permit conversion between the fiber channel interface and a different interface as needed. Control processors, shared by the host interface controllers, each reference FCAL (fiber channel arbitrated loop) management information to capture a frame having an address of the processor in question from among the frames passing through the loop. I/O processing is then carried out by the controller in accordance with a range of logical unit numbers (LUN) set in the captured frame.

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