System and method for prioritizing iSCSI data transmission using data center bridging enabled switches

摘要

A method of prioritizing data transmissions between a SCSI initiator and a SCSI target in a network system with DCB enabled switches. The method includes a switch controller detecting a SCSI set priority response transmitted via a first pair of switch ports from a SCSI target to a SCSI initiator, which communicate SCSI messaging and transmit I/O data via the first pair of switch ports. In response to detecting the SCSI set priority response, the priority data established by the SCSI target is retrieved and, based on the retrieved priority data, the switch controller autonomously sets the DCB priority for the first pair of switch ports to a first DCB priority value correlated to the retrieved priority data. Transmission of the I/O data between the SCSI initiator and the SCSI target is supported with a priority of the first pair of switch ports set to the first DCB priority value.

主权项

1. A method of prioritizing data transmissions in a network system having at least one switch, the method comprising:
a switch controller detecting a small computer system interface (SCSI) set priority response being transmitted via at least a first switch port between SCSI devices, wherein the SCSI devices are a SCSI target and a SCSI initiator that are communicating SCSI commands and responses and transmitting input/output (I/O) data via the first switch port; in response to detecting the SCSI set priority response:
retrieving priority data established by the SCSI target; andbased on the retrieved priority data, autonomously setting a data center bridging (DCB) priority for the first switch port to a first DCB priority value correlated to the retrieved priority data; andsubsequently supporting transmission of the I/O data between the SCSI initiator and the SCSI target with a priority of the first switch port set to the first DCB priority value.