9 internal and external bus connections, Internal and external bus connections, Internal and external scsi device termination – LSI U80ALVD User Manual

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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