Fcp Information Units - Sun Microsystems storagetek sl500 Reference Manual

FCP Information Units

Information units transfer data to and from the SCSI initiator and SCSI target and
include the following required units:
T1 = Command and Task Management
■
T6 = Write Data (such as Mode Select and Write commands)
■
T12 = Response Received Confirmation
■
I1 = Transfer Ready on a Write Command
■
I3= Read Data (such as Mode Sense and Read commands)
■
I4 = Response (such as Status)
■
I5 = Response with Confirm Request
■
FIGURE 5-2 Examples of Read and Write Information Units
WRITE CMD
T1
FCP_XFER_RDY
T6
FCP_XFER_RDY
T6
T12
96122 • Revision: F
FCP_CMD
I1
DATA
DATA
DATA
I1
DATA
DATA
DATA
I4
FCP_RSP
OR
I5
FCP_RSP
FCP_CONF
(OPTIONAL)
READ CMD
FCP_CMD
T1
DATA
DATA
DATA
DATA
DATA
DATA
FCP_RSP
OR
FCP_RSP
T12
FCP_CONF
(OPTIONAL)
Chapter 5 Fibre Channel Operations 71
FC-4 (FCP) Features
I3
I3
I4
I5
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