User Manual

SCSI Commands Reference Manual, Rev. J 492
www.seagate.com Parameters for direct access devices
PIV (Protocol Identifier Valid) bit
0 A protocol identifier valid (PIV) bit of zero indicates the PROTOCOL IDENTIFIER field should be ignored. If the ASSOCIATION field contains
a value of 1h or 2h then a PIV bit set to one indicates the PROTOCOL IDENTIFIER field contains a valid protocol identifier selected from
the values shown in table 461. If the ASSOCIATION field contains a value other than 1h or 2h then the PIV bit should be ignored.
ASSOCIATION field
The ASSOCIATION field indicates the entity that the Identification descriptor describes. If a physical or logical device returns an Identification
descriptor with the ASSOCIATION field set to 0h, it shall return the same descriptor when it is accessed through any other path.
The ASSOCIATION field specifies the entity with which the Identifier field is associated, as described in Table 462.
Table 462 ASSOCIATION field
Table 461 PROTOCOL IDENTIFIER values
Protocol Identifier Description Protocol Standard
0h Fibre Channel FCP-4
1h Obsolete
2h SSA SSA-S3P
3h IEEE 1394 SBP-2
4h Remote Direct Memory Access (RDMA) SRP
5h Internet SCSI iSCSI
6h SAS Serial SCSI Protocol SAS
7h - Fh Reserved
Value Description
0h
The IDENTIFIER field is associated with the addressed physical or logical device
1h
The IDENTIFIER field is associated with the port that received the request
2h
The IDENTIFIER field is associated with the SCSI target device that contains the addressed logical unit.
3h
Reserved