Method of monitoring status information of remote storage...

Details Method of monitoring status information of remote storage... Method of monitoring status information of remote storage...

2008-05-27

2008-05-27

Sough, Hyung S. (Department: 2188)

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

C711S158000, C709S224000

Reexamination Certificate

active

07380079

ABSTRACT:
A host computer acquires remote copy status information of storage subsystems that are not directly coupled to the host computer.Each storage subsystem includes: a unit which receives a status information acquisition command from the host computer; a unit which analyzes the received command to judge whether the storage subsystem in question is a target of the command; a unit which sends the command to a downstream storage subsystem connected to the storage subsystem in question when the storage subsystem in question is not the target; and a unit which sends status information to an upstream storage subsystem connected to the storage subsystem in question when the status information is received from the downstream storage subsystem.

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Remote Storage Disk Control Device with Function to Transfer Commands to Remote Storage Devices, pp. 1-86 . . . Fig. 1-28.
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