Implementation Requirements
August 2016 Commands 39
Implementation Requirements
The initiator sends commands to the target using Command Descriptor Blocks
(CDBs). The CDBs contain a format that includes:
• Operation code
• Command parameters
• Control byte
For some commands, a list of parameters accompanies the request during subsequent
FCP_DATA Information Units.
For all commands, if there is an invalid parameter in the Command Descriptor Block,
then the device terminates the command without altering the medium or executing
the command.
Notes:
• The CDB Field in Byte 1, Bits 7-5, which was the LUN Field is now
reserved. The drive will ignore this field.
• RSVD indicates that “bit” is reserved.
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