Selecting storage clusters to use to access storage

Details Selecting storage clusters to use to access storage Selecting storage clusters to use to access storage

2008-04-22

2010-06-01

Lane, Jack A (Department: 2185)

Electrical computers and digital processing systems: memory

Storage accessing and control

Shared memory area

C711S148000, C711S151000, C711S158000, C711S163000, C709S216000, C710S017000

Reexamination Certificate

active

07730267

ABSTRACT:
Provided are a method, system and program for selecting storage clusters to use to access storage. Input/Output (I/O) requests are transferred to a first storage cluster over a network to access storage. The storage may be additionally accessed via a second storage cluster over the network and both the first and second storage clusters are capable of accessing the storage. An unavailability of a first storage cluster is detected when the second storage cluster is available. A request is transmitted to hosts over the network to use the second storage cluster to access the storage. Hosts receiving the transmitted request send I/O requests to the storage via the second storage cluster if the second storage cluster is available.

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