Electrical computers and digital processing systems: memory – Storage accessing and control – Shared memory area
Reexamination Certificate
2006-10-24
2006-10-24
Kim, Matthew (Department: 2186)
Electrical computers and digital processing systems: memory
Storage accessing and control
Shared memory area
C711S163000, C711S148000, C709S221000, C709S224000, C709S225000, C709S229000
Reexamination Certificate
active
07127565
ABSTRACT:
In data storage system including multiple servers and multiple disks, and wherein each server is in communication with each disk, each disk has a reserved disk block for each of the servers. The system includes a disk arbitration mechanism that uses a timestamp-based voting algorithm over the disk blocks associated with the servers to exchange votes for a primary server to arbitrate access of the servers to a set of disks. The disk arbitration mechanism further includes each server writing its state in its own associated disk block in each disk, and reading all the other servers' disk blocks in each disk in order to determine which server has access to, use, and control of the disks at a given time.
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Kim Matthew
Schwartz Ansel M.
Spinnaker Networks, Inc.
Thomas Shane M.
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