Patent ID: 7085867

Claim:
A method for mapping SCSI2 reservation exchanges for use in a SCSI3 storage subsystem wherein the subsystem is coupled to an application that supports only SCSI2 reservation exchanges and wherein the subsystem is also adapted to be coupled to one or more applications that directly support SCSI3 persistent reservation exchanges; the method comprising: receiving a SCSI2 reservation exchange via an associated path wherein the SCSI2 reservation exchange is generated by a SCSI2 application that supports only SCSI2 reservation exchanges; generating a unique identifier identifying the associated path; translating the received SCSI2 reservation exchange into a corresponding SCSI3 reservation exchange using the unique identifier wherein the step of translating is transparent to the SCSI2 application; and processing the SCSI3 reservation exchange to manage reservation of an identified portion of storage in the storage subsystem wherein the step of processing is transparent to the SCSI2 application.