A METHOD AND SYSTEM FOR UN-TAGGED COMMAND QUEUING

摘要

A method and system are disclosed for processing tagged commands from a Fibre Channel host in a Fibre Channel network to one or more SCSI streaming target devices through a SCSI router. The method includes the step of determining whether the command is a tagged command. If the command is a tagged command, then the command processing method of the current invention determines whether the intended target device is a streaming target device. If the intended target device is a streaming target device, the method and system of the present invention can convert the command's format from a tagged command format to an un-tagged format and forward the command to the intended target device. Flags in an internal SCSI router register can be set to track which, if any, devices attached to the SCSI router can support tagged commands. Upon completion of the command, the method of the present invention can forward the command complete message to the issuing Fibre Channel host.