The SCSI family of standards provides for different transport protocols that define the methods for exchanging information between SCSI devices. This standard defines the transport methods for exchanging information between SCSI devices using a PCI Express interconnect. This standard defines a queuing layer@ used by SOP. Other SCSI transport protocol standards define the methods for exchanging information between SCSI devices using other interconnects. Figure 1 shows the relationship of this standard to the other standards and related projects in the SCSI family of standards.