Hitachi ULTRASTAR 15K450 HUS154530VLF400 - Manual (Page 95)

Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification
79
Table 53: PRLI ACC payload
17.3.9.1 Process Login Service Parameter page
Table 54: Login Service Parameter page
The TYPE code field for SCSI-FCP is 08h, and the TYPE Code Extension field is 00h.
The Flags field is as follows:
• Bit 15 - Originator Process Associator Valid
When set to one, the Originator Process Associator field for this Service Parameter page is valid.
• Bit 14 - Responder Process Associator Valid
When set to one, the Responder Process Associator field for this Service Parameter page is valid.
• Bit 13 - Establish Image Pair
When set to one, this flag indicates that the Originator wishes to establish an image pair.
• Bits 12-0 - Reserved
The Originator Process Associator identifies a group of related processes (an 'image') within the originator.
The Responder Process Associator identifies a group of related processes (an 'image') within the responder.
The Service Parameters field contains flags, as follows:
• Bits 31-7 - Reserved
• Bit 6 - Data Overlay Allowed
When set to one, this flag indicates that the initiator function is capable of supporting data overlay.
• Bit 5 - Initiator Function
When set to one, this flag indicates that the process defined by this page is operating as a SCSI Initiator.
This bit must be set to one in order for the drive to accept the login request. If not, the drive will respond with an
LS_RJT containing a reason code of 03h “Logical error” and a reason code explanation of 00h “No additional expla-
nation”.
Byte Item Size (Bytes)
0 02h 1
1 Page Length=10h 1
2-3 Payload Length 2
4-max Login response service parameter pages n*16
Byte Item Size (Bytes)
0 TYPE Code = 08h 1
1 TYPE Code Extension = 00h 1
2-3 Flags 2
4-7 Originator Process Associator 4
8-11 Responder Process Associator 4
12-15 Service Parameters 4