Information processing apparatus and method of controlling...

Details Information processing apparatus and method of controlling... Information processing apparatus and method of controlling...

2006-03-28

2006-03-28

Ho, Duc (Department: 2665)

Multiplex communications

Diagnostic testing

Fault detection

C370S248000, C709S217000

Reexamination Certificate

active

07020089

ABSTRACT:
An information processing system comprises an information processing apparatus, a switch, and a storage device, wherein the first communication ports and the third communication ports are connected to the second communication ports. When a response from a storage device to a data input/output request is not received within a predetermined time period, the information processing apparatus transmits a second and a third data input/output requests from the first communication port on the first communication channel, and transmits an inspection request to the switch to inspect a second communication port on the first communication channel. When responses to the second and third data input/output requests are not received within a predetermined time period, and a response to the inspection request is received within a predetermined time period, the information processing apparatus determines that there is a fault in the first communication port on the first communication channel.

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