Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2005-04-12
2005-04-12
Chace, Christian P. (Department: 2187)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
C711S006000, C711S114000, C714S006130
Reexamination Certificate
active
06880052
ABSTRACT:
A storage area network (SAN) controller and method for storing and replicating data between sites in a storage area network in which storage controllers at each site implement storage virtualization. A storage cell is implemented at each site comprising at least one storage controller and a pool of physical storage coupled to the controller. A copy set comprising a logical unit (LUN) of storage, referred to as a member, in each of the storage cells is defined. As operational data transactions are performed against one of the members of a copy set, they are replicated, immediately or after a delay, in each other member of the copy set. As changes are made to dependent attributes such as size of one member of the copy set, the change is replicated in each other member of the copy set automatically. Changes can be made in the independent attributes such as size of each member of the copy set independently of other members of the copy set.
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Elkington Susan
Hess Randy
Korgaonkar Anuja
Leveille Jason
Lubbers Clark
Chace Christian P.
Hewlett-Packard Development Company LP
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