Seagate Fibre Channel Interface User Manual
Page 89
Fibre Channel Interface Manual, Rev. D
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Data Overlay Allow
Not supported by the drive. The Data Overlay Allowed bit is not checked.
Data/Response Allowed
1
Allows the drive to send the FCP RSP in the same sequence as the data. The drive does not support the Data/
Response Mix. It will accept a PRLI with the Allow bit set, but will return a 0 in the accept to indicate the function
cannot be used.
Establish Image Pair
1
The drive establishes a SCSI login for the initiator.
0
The PRLI is only an inquiry of the drive’s support of the process. The accept is still returned, but the login is not
retained.
Initiator Function
Must be set to one (1) for the drive to accept the login request.
LS Command Code (Link Services Command Code)
02h
PRLI Accept Payload.
Orig Proc Assc Valid (Originator Process Associator Valid)
Not supported by the drive. Not checked by the drive.
Must be set to zero (0).
Page Length
Length of the service parameter page (in bytes). For a SCSI FCP service page, the length is 10h.
Payload Length
Length of PRLI payload (in bytes). The count includes the LS Command Code. The drive supports one service parameter
page per PRLI.
The Payload length must be 14h (20 decimal).
Rd XFR RDY Disable (Read Transfer Ready Disable)
1
FCP_XFR_RDY will not be sent before read data. The drive requires this bit to be set to one (1).
Resp Proc Assc Valid (Responder Process Associator Valid)
Not supported by the drive. Not checked by the drive.
Must be set to zero (0).
Response Code
The result of the PRLI request.
Only codes 1 and 7 are supported by the drive.
0
Reserved.
1
Request executed.
2
The target has no resources available for establishing the login.
3
Initialization is not complete. The PRLI may be retried.
4
The Image Pair does not exist.
5
The Image Pair cannot be established due to a predefined configuration.
6
Request executed conditionally. Some of the parameters were not able to be set to their requested state.
7
The destination port is unable to process multiple page PRLI request. The PRLI request may be retried as a single
page request.
Target Function
May be set in addition to the Initiator Function bit. The drive does not check this bit.