LSI U40HVD - Manual (Page 35)

Detailed Installation Procedure 2-19
Figure 2.13 External SCSI Device Termination
2.2.4.3 Internal and External SCSI Connections
If internal and external SCSI device connections to the host adapter have
been made, you must terminate the last internal and external devices on
the SCSI bus. You must disable the termination on all other devices.
Termination on the host adapter is automatically disabled in this case.
Figure 2.14 shows an example of how termination is determined for this
SCSI bus configuration on the LSIU40HVD Channel B.
Last Device
on Chain -
Termination
Enabled
Does Not
End Chain -
Termination
Disabled
Host Adapter
Automatically
Terminated