Apparatus and methods for multiple unidirectional virtual...

Details Apparatus and methods for multiple unidirectional virtual... Apparatus and methods for multiple unidirectional virtual...

2007-03-06

2009-11-24

Myers, Paul R (Department: 2111)

Electrical computers and digital data processing systems: input/

Intrasystem connection

Bus interface architecture

C370S280000

Reexamination Certificate

active

07624223

ABSTRACT:
Apparatus and methods for enabling multiple, unidirectional, virtual connections between a first SAS device and multiple other SAS devices in a SAS domain. An enhanced first SAS device may be substantially simultaneously coupled to each of two other SAS devices through one or more appropriately enhanced SAS expanders to allow substantially simultaneous unidirectional virtual connections from the first SAS device to both of the second and third SAS devices. Each virtual connection is, in essence, a half-duplex connection such that the first device is transmitting information to a second SAS device substantially simultaneous with the first device receiving information from a third SAS device. The enhancements are provided in a manner to allow backward compatibility with current SAS specifications for connectivity among devices not suitably enhanced in accordance with features and aspects hereof (e.g., with legacy devices).

REFERENCES:
patent: 7155546 (2006-12-01), Seto
patent: 7206875 (2007-04-01), Marushak et al.
patent: 7269674 (2007-09-01), Chikusa et al.
patent: 7340551 (2008-03-01), Elliott et al.
patent: 7356728 (2008-04-01), Tawil et al.
patent: 7377800 (2008-05-01), Gasser
patent: 7451255 (2008-11-01), Gustafson et al.
patent: 7457902 (2008-11-01), Yang et al.
patent: 2005/0210159 (2005-09-01), Voorhees et al.
patent: 2005/0228924 (2005-10-01), Marushak et al.
patent: 2006/0080671 (2006-04-01), Day et al.
patent: 2006/0101171 (2006-05-01), Grieff et al.
patent: 2006/0242312 (2006-10-01), Crespi et al.
patent: 2007/0005833 (2007-01-01), Seto
patent: 2007/0088917 (2007-04-01), Ranaweera et al.
patent: 2007/0220204 (2007-09-01), Nakajima et al.
patent: 2007/0226757 (2007-09-01), Bashford et al.
patent: 2008/0005470 (2008-01-01), Davies
patent: 2008/0091810 (2008-04-01), Blinick et al.
Working Draft American National Standard Project 110/1601-D Information technology—Serial Attached SCSI-1.1 (SAS-1.1) Revision 4, Mar. 13, 2004.
Chow, I. “SAS Expander FPGA Emulation”, Simon Frasier University Thesis, Fall 2005, Burnaby, BC, Canada.

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