System and method for SAM-3 prioritization in iSCSI using 802.1q ethernet prioritization
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United States of America Patent
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Jan 5, 2010
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app pub date -
Dec 15, 2006
filing date -
Dec 15, 2006
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Abstract
One embodiment of the present invention sets forth a technique for mapping a small computer system interface (SCSI) architecture model-3 (SAM-3) task priority to an IEEE Standard 802.1q tag control information (TCI) field. Four bits that define a SAM-3 task priority are mapped to the three user priority bits within a standard 802.1q TCI field. By enabling the SAM-3 task priority of a given SCSI command to determine the user priority within a related IEEE 802.1q Ethernet frame, the Ethernet network is enabled to substantially honor the requested task priority for the SCSI command.
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