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Figure 4 is an example of a Configuration A supported KZPEA shared SCSI bus configuration.
Figure 4 Shared Tape Configuration A
Configuration B (Any supported tape drive)
Configuration B (Figure 5) requires the use of a Tri-link at the middle node, use of a terminator cable
between the middle and end node with one adapter being in the middle of the bus. The on-board termination
of both adapters in both nodes must be
disabled
for each channel used in a shared bus configuration.
Termination is disabled by removing jumper J5 for SCSI Channel 1/A and jumper J3 for SCSI Channel 2/B,
and also setting the Host Adapter SCSI Termination to “Low OFF/High OFF” for Channel 1/A and
“Disabled” for Channel 2/B with the SCSI Configuration Utility.
Refer to the
KZPEA User’s Guide
regarding operation of the adapter’s onboard SCSI Configuration Utility.
Note:
For shared bus configuration only, please disregard the “SCSI Termination” paragraph under
section 2.1.2 of the KZPEA User Guide which states that the adapter can only be located at the end
of the bus, requiring jumpers J3 and J5 to be installed.
Termination will be supplied at the tape drive on one end of the bus and by a terminator cable at the other end of
the bus. Please refer to the documentation for your tape drive to determine how to terminate the SCSI bus at the
tape drive.
Note:
In Configuration B
only
SCSI Channel 2/B on the KZPEA is supported for shared bus use with the SDLT
600 or the Ultrium 448 tape drives. These drives cannot be configured on a shared bus using SCSI Channel 1/A
on the KZPEA. The SDLT320 tape drive may be used on either SCSI channel
