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8.12.3.4 Connecting the ESL9326D Enterprise Library to the Shared SCSI Bus
The ESL9326D Enterprise Library has 5 meters of internal SCSI bus cabling
for each pair of tape drives. Because of the internal SCSI bus lengths, it
is not possible to use a trilink connector or Y cable to terminate the SCSI
bus external to the tape library as is done with other devices on the shared
SCSI bus. Each SCSI bus must be terminated at the end of the SCSI bus by
installing a terminator on the SCSI bulkhead SCSI connector. Therefore,
TruCluster Server configurations using the ESL9326D Enterprise Library
must ensure that the tape library is on the end of the shared SCSI bus.
______________________
We recommend that disk storage devices be placed on separate
shared SCSI buses.
Use 328215-001 (5-meter), 328215-002 (10-meter), 328215-003 (15-meter),
328215-004 (20-meter), or BN21K (BN21L) cables of the appropriate length
to connect the ESL9326D Enterprise Library to a shared SCSI bus. Do
not use a cable longer than 20 meters. Terminate each SCSI bus with
a 330563-001 (or H879-AA) HD-68 terminator. Connect the cables and
terminator on the SCSI bulkhead SCSI connectors as shown in Table 8–14
to form shared SCSI buses.
Table 8–14: Shared SCSI Bus Cable and Terminator Connections for the
ESL9326D Enterprise Library
Tape Drives on Shared
SCSI Bus
0, 1, and library electronics
2, 3
4, 5
6, 7
8, 9
10, 11
12, 13
14, 15
a Install .3-meter jumper cable part number 330582-001 between SCSI connectors R and A to place the
library electronics on the SCSI bus with tape drives 0 and 1.
8–68 Configuring a Shared SCSI Bus for Tape Drive Use
Note
_______________________
Connect SCSI Cable
to Connector:
a
Q
C
E
G
I
K
M
O
Install HD68 Terminator
on Connector:
B
D
F
H
J
L
N
P
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