A new draft of SAM-4 was released yesterday and Annex B has been added. It tabulates various attributes (e.g. maximums) for 5 modern SCSI transports. [SPI has dropped out of both Annex A and B.] See: http://www.t10.org/ftp/t10/drafts/sam4/sam4r13.pdf That should be a useful design tool. Strangely iSCSI supports cdb lengths of 65550 bytes! Doug Gilbert - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html