SCSI Primary Commands - 2.pdf

T10/1236-D Revision 20 18 July 2001NOTE 5 The World Wide Name target descriptor format burdens the copy manager with translating the World WideName to an N_Port identifier (see 7.2.6.3).7.2.6.3 Fibre Channel N_Port target descriptor formatThe target descriptor format shown in table 20 is used to identify a target using its Fibre Channel N_Port.Table 20 — Fibre Channel N_Port target descriptor formatBitByte7 6 5 4 3 2 1 00 DESCRIPTOR TYPE CODE (E1h)1 Reserved NUL PERIPHERAL DEVICE TYPE2 Reserved3 Reserved4 (MSB)LOGICAL UNIT NUMBER11 (LSB)1220Reserved21 (MSB)22N_PORT23 (LSB)2427Reserved2831Device type specific parametersThe DESCRIPTOR TYPE CODE, PERIPHERAL DEVICE TYPE and NUL fields and the device type specific parameters aredescribed in 7.2.6.1.The LOGICAL UNIT NUMBER field specifies the logical unit within the SCSI device addressed by the data in theN_PORT field that shall be the source or destination for EXTENDED COPY operations.The N_PORT field shall contain the FC-FS port D_ID to be used to transport frames including PLOGI and FCP-2related frames.NOTE 6 Use of N_PORT addressing restricts this target descriptor format to a single fabric.52 dpANS SCSI Primary Commands - 2 (SPC-2)