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Fibre Channel Interface Manual, Rev. D 351
Control
See Section 11.2.1.6.
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).
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.
FUA (Force Unit Access)
1 The Write command does 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 8 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 XDWriteRead Extended (32) command.
Transfer Length
The number of logical blocks to be transferred to the XDWrite target for the xor operation. It also specifies the number of
blocks to be written to the medium after the xor operation.
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