Electrical computers and digital data processing systems: input/ – Input/output data processing – Input/output access regulation
Reexamination Certificate
2005-09-29
2009-11-24
Kindred, Alford W (Department: 2181)
Electrical computers and digital data processing systems: input/
Input/output data processing
Input/output access regulation
C710S036000, C710S316000, C711S112000, C711S114000
Reexamination Certificate
active
07624206
ABSTRACT:
A data storage system has a chassis and a pair of printed circuit boards disposed in the chassis. Each one of the pair of printed circuit boards has disposed thereon a processor, a translator controlled by the processor, a SAS expander having a bidirectional front end port and multiple bidirectional backend ports, and an expansion port, and a SAS controller coupled between the translator and the expander. The system also has an interposer printed circuit board disposed in the chassis, and multiple multiplexers disposed on the interposer printed circuit board. Each one of the multiplexers has a pair of bidirectional front end ports and a pair of bidirectional back end ports. A first one of the pair of bidirectional front end ports is connected to a corresponding backend port of the SAS expander disposed on a first one of the pair of storage processor printed circuit boards. A second one of the pair of bidirectional front end ports is connected to a corresponding backend port of the SAS expander disposed on a second one of the pair of storage processor printed circuit boards. The system also has multiple disk drives disposed in the chassis. Each one is coupled to at least one backend port of a corresponding one of the multiplexers.
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Written Opinion of ISA.
Bailey Adrianna D.
Burroughs John V.
Didier John P.
Gasser Morrie
Long Matthew
EMC Corporation
Franklin Richard
Kindred Alford W
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