When link fault diagnostic manner, the deisukuarei system, and link fault diagnosis

摘要

PPROBLEM TO BE SOLVED: To provide an FC-AL (fiber channel-arbitrated loop) disk array system or the like capable of efficiently carrying out a fault diagnosis after resumption even if a fault is restored in the middle of a link diagnosis to cause an interruption of the fault diagnosis. PSOLUTION: The disk array system comprises an FC-AL connecting a plurality of disk devices 30, and a disk adapter device 10. The adapter device 10 comprises an FC-AL control part 14 monitoring the link fau a disk diagnosis control part 16 searching a fault disk while sequentially separating the disk devices 30 from the FC-AL according to the predetermined diagnosis order at the occurrence of the link fau and a registering part 15 registering interrupted position information for specifying a diagnosis start disk device which is required when resuming the diagnosis when the fault diagnosis is interrupted while the fault disk cannot be specified. The diagnosis disk control part 16 acquires the interrupted position information from the registering part 15 when resuming the fault diagnosis, and specifies the disk device in resuming the diagnosis. PCOPYRIGHT: (C)2009,JPO&INPIT