Storage system and disconnecting method of a faulty storage...

Details Storage system and disconnecting method of a faulty storage... Storage system and disconnecting method of a faulty storage...

2003-12-16

2008-08-12

Beausoliel, Jr., Robert W (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S005110, C714S006130, C714S044000, C714S056000

Reexamination Certificate

active

07412628

ABSTRACT:
A storage system in which a plurality of storage devices are connected by a pair of loops, disconnects a faulty storage device. The faulty storage device is disconnected from said loops by using, in conjunction, a first disconnect mode, in which a disconnect instruction is issued to a device control unit via a first path which connects controllers and device control units, and a second disconnect mode, in which a disconnect instruction is issued to a device control unit via a second path which connects loops connecting the plurality of storage devices, storage devices, and device control units. Even when a pair of connection ports of a storage device is abnormal, and even when the first path is abnormal, the faulty storage device can be disconnected reliably.

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