Fujitsu MAT3300FC 사용자 설명서
1.11 Enclosure Service Interface (ESI)
C141-C008
1-99
1.11 Enclosure Service Interface (ESI)
Enclosure Service Interface provides the protocol defining the information
between the enclosure and the drive.
between the enclosure and the drive.
The drive starts to execute Enclosure Service when the drive receives “Send
Diagnostic” command or “Receive Diagnostic Result” command with Enclosure
Service page specified.
Diagnostic” command or “Receive Diagnostic Result” command with Enclosure
Service page specified.
a) SFF8045
Two modes in SFF8045 exist, which are Without Parallel ESI and With
Parallel ESI.
Parallel ESI.
SFF8045 w/o Parallel ESI only includes the function that the enclosure
provides SEL_ID defined in FC-AL to the drive.
provides SEL_ID defined in FC-AL to the drive.
On the other hand, SFF8045 with Parallel ESI provides an additional
function that the drive can read the status from the enclosure.
function that the drive can read the status from the enclosure.
b) SFF8067
This mode covers SFF8045 function and has a purpose for diagnostics and
receiving the status of the enclosure in the next manner.
receiving the status of the enclosure in the next manner.
The drive receives Send Diagnostic command from the initiator.
Then the drive transmits the page specified in Send Diagnostic command to
the enclosure.
the enclosure.
The drive receives Receive Diagnostic Result command from the
initiator.
initiator.
Then the drive receives the page specified in Receive Diagnostic Result
command from the enclosure.
command from the enclosure.
1.11.1 Data transfer protocol
When powered on, the enclosure operates as SFF8045 w/o Parallel ESI and
provides SEL_ID to the drive.
provides SEL_ID to the drive.
The communication starts upon receiving Send/Receive Diagnostic command as
described in Figure 1.55.
described in Figure 1.55.