SCSI Primary Commands - 2.pdf

18 July 2001 T10/1236-D Revision 20Table 18 lists the peripheral device type code values having formats defined for the device type specific parametersin a target descriptor. Peripheral device types with code values not listed in table 18 are reserved in theEXTENDED COPY parameter list.Table 18 — Device type specific parameters in target descriptorsPeripheralDevice Type Reference Description Shorthand00h, 04h, 05h, 07h, and 0Eh 7.2.6.7 Block devices Block01h 7.2.6.8 Sequential-access devices Stream or Tape03h 7.2.6.9 Processor devices StreamThe copy manager may, as part of processing a segment descriptor, verify the information in a target descriptor’sdevice specific fields. However, when verifying the information, the copy manager shall not issue any commandsthat change the position of read/write media on the target without restoring it. Any errors encountered whileverifying the information shall be handled as described in 7.2.3.7.2.6.2 Fibre Channel World Wide Name target descriptor formatThe target descriptor format shown in table 19 is used to identify a target using its Fibre Channel World WideName.Table 19 — Fibre Channel World Wide Name target descriptor formatBitByte7 6 5 4 3 2 1 00 DESCRIPTOR TYPE CODE (E0h)1 Reserved NUL PERIPHERAL DEVICE TYPE2 Reserved3 Reserved4 (MSB)LOGICAL UNIT NUMBER11 (LSB)12 (MSB)WORLD WIDE NAME19 (LSB)2027Reserved2831Device 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 the WORLDWIDE NAME field that shall be the source or destination for EXTENDED COPY operations.The WORLD WIDE NAME field shall contain the port World Wide Name defined by the Physical Log In (PLOGI)extended link service, defined in FC-FS.dpANS SCSI Primary Commands - 2 (SPC-2) 51