Datasheet

1.11 Enclosure Service Interface (ESI)
C141-C008 1-101
1.11.2 Enclosure discovery phase
no
assert –PARALLEL ESI
Do bits SEL_(0:3)
invert in <1 usec
yes
Does –ENCL_ACK
assert in <1 sec
no
yes
assert –DSK_RD, –DSK_WR
Do either bits
SEL_(0-7) change
no
yes
enclosure is SFF-8067
and the drive executes
command and data xfer
Does –ENCL_ACK
negate in <100 usec
no
yes
negate –DSK_RD, –DSK_WR
SFF-8045 with Parallel ESI . Provide ESI
information.
enclosure is SFF-8067
ASC/ASCQ = 35/02
and the drive responds
with
Sense Key = 02
(Case 2)
enclosure is SFF-8045
w/o = parallel ESI and
the drive responds with
ASC/ASCQ = 35/01
Sense Key = 05
(Case 1)
Case 1; The drive is SFF8045 w/o Parallel ESI enclosure and transmits sense
data (ASC = 35, ASCQ = 01) to the initiator.
Case 2; The drive is SFF8067 enclosure and transmits sense data (ASC = 35,
ASCQ = 02) to the initiator.
Figure 1.56 Discovery flow chart