Storage system that finds occurrence of power source failure

Details Storage system that finds occurrence of power source failure Storage system that finds occurrence of power source failure

2008-02-04

2010-10-05

Baderman, Scott T (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S022000, C714S042000, C714S043000, C714S044000

Reexamination Certificate

active

07809983

ABSTRACT:
One or more switches are interposed between a controller portion and a storage device. When transmission of a command to a certain storage device fails, a command is transmitted starting from an upstream side to a downstream side of a path between the controller portion and the switch to which the certain storage device is connected, and when command transmission fails while transmitting a command from a kthswitch (k is an integer of 0 or more) which is connected to a (k+1)thswitch and is one level upstream of the (k+1)thswitch or from any port of the controller portion, it is determined that a failure has occurred in a power source that supplies power to the (k+1)thswitch.

REFERENCES:
patent: 7111087 (2006-09-01), Jiang et al.
patent: 2003/0217300 (2003-11-01), Fukumori et al.
patent: 2004/0078663 (2004-04-01), Inaba
patent: 2005/0278581 (2005-12-01), Jiang et al.
patent: 2006/0193073 (2006-08-01), Hakamata et al.
patent: 2009/0013215 (2009-01-01), Kakihara et al.
patent: 2006-126972 (2004-10-01), None

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