Methods and structure for SAS expander initiating...

Details Methods and structure for SAS expander initiating... Methods and structure for SAS expander initiating...

2008-07-15

2008-07-15

Auve, Glenn A (Department: 2111)

Electrical computers and digital data processing systems: input/

Intrasystem connection

System configuring

C710S008000, C710S010000, C710S016000, C710S302000

Reexamination Certificate

active

07401171

ABSTRACT:
Methods and structures within a SAS expander for initiating communication with one or more SAS initiators in a SAS domain to inform the initiators of sensed changes in the domain without the need for a full SAS Discovery process. In one aspect hereof, the expander may transmit a vendor unique BROADCAST primitive to inform SAS initiators that they should initiate a vendor unique SMP or SSP exchange with the expander to determine changes to the SAS domain. In another aspect hereof, the SAS initiator may respond as an SMP or SSP target device in response to initiation of vendor unique SMP or SSP exchanges by the expander. The expander may report to initiators regarding sensed changes in the domain and/or statistics regarding operation of the expander or other elements of the domain.

REFERENCES:
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patent: 2005/0080881 (2005-04-01), Voorhees et al.
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“A comprehensive production test solution for 1.5Gb/s and 3Gb/s serial—ATA—based on AWG and undersampling techniques” by Cai et al. (abstract only) Publication Date; Nov. 8-10, 2005.

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