LSI U80ALVD - Manual (Page 39)

Detailed Installation Procedure 2-21
2.2.9 Internal and External Bus Connections
If internal and external SCSI device connections to your host adapter
have been made, then terminate the last internal and last 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.
Figure 2.14 Internal and External SCSI Device Termination
Last device on Bus –
Does not end Bus –
Host Adapter Termination
Do not end Bus –
Last Device on Bus –
Terminators Enabled
Terminators Disabled
Automatically Disabled
Terminators Disabled
Terminators Enabled