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348 Fibre Channel Interface Manual, Rev. D
Field definitions (listed alphabetically)
Additional CDB Length
The Additional CDB Length field indicates the number of additional CDB bytes. This value in the Additional CDB Length
field shall be a multiple of 4. If the number of CDB bytes delivered by the service delivery subsystem is not sufficient to con-
tain the number of bytes specified by the Additional CDB Length field, the command shall be terminated with a Check Con-
dition status. The sense key shall be set to Illegal Request and the additional sense code shall be set to Invalid Field in
CDB.
Control
See Section 11.2.1.6.
Disable Write
0 The data transferred from the initiator is written to the medium after the xor operation is complete.
1 The data is not written to the medium.
DPO (Disable Page Out)
1 No data is cached. The DPO bit is only meaningful if the RCD bit of Mode Select Page 8 is set false (caching
enabled).
FUA (Force Unit Access)
1 The Write command will not return Good status until the logical blocks have actually been written on the media. The
FUA bit is only meaningful if the WCE bit of Mode Sense page 08h is true.
Logical Block Address
The starting logical block address of the data to be affected by the xor operation.
Service Action
0004h The Service Action Code for the XDWrite (32) command.
Transfer Length
The number of logical blocks that will be transferred to the XDWrite target and the number of logical blocks that will be
affected by the xor operation.
Table
number
236
236
236
236
236
236
236
236