Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Reexamination Certificate
2008-07-08
2008-07-08
Chu, Gabriel L (Department: 2114)
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
C714S016000
Reexamination Certificate
active
07398421
ABSTRACT:
Systems and methods for storage area network switch port failure recovery. A system may include several hosts, storage devices and a storage area network (SAN) switch. The SAN switch may include several ports, where each host is coupled to a respective host port and each storage device is coupled to a respective storage port. The SAN switch may also include virtualization logic configured to map several of the storage devices as a volume presented to the hosts via the respective host ports, and an input/output (I/O) tracking mechanism configured to store information about write operations in progress at each of the ports. In response to a failure of a given port occurring while write operation(s) to the volume received via one or more of the respective host ports are in progress, the SAN switch may be configured to initiate consistency recovery of the volume using the stored information.
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Guha Amitava
Limaye Prasad
Sharma Gopal
Chu Gabriel L
Kowert Robert C
Meyertons Hood Kivlin Kowert & Goetzel P.C.
Symantec Operating Corporation
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