2.2.10 Internal Scsi Connections For Both Internal Connectors; Internal And Internal Scsi Device Termination - LSI LSIU40SE User Manual

2.2.10 Internal SCSI Connections for Both Internal Connectors

Figure 2.17 Internal and Internal SCSI Device Termination
If you have internal SCSI device connections to both internal connectors
of a channel, you must terminate the internal devices on each end of the
SCSI bus. You must disable the termination on all other devices.
Termination on the host adapter is automatically disabled in this case.
Remember, you must not use the external connector for a channel if you
use both internal connectors for that channel.
Figure 2.17 shows an example of how termination is determined for this
SCSI bus configuration. If you connect the LSIU40SE in the middle of
the bus, you will incur improper termination since the switches are not
assigned on that bus correctly.
If you have an internal connection to another LSIU40SE, or any
connection to a device that uses the same sensing method for automatic
termination as your LSIU40SE, you must properly set the termination
override switches U1 or U2 (see
Detailed Installation Procedure
Host Adapter
Termination
Automatically
Disabled
Figure 2.1).
Last Devices
on Chain –
Termination
Enabled
Does Not
End Chain –
Termination
Disabled
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