2.2.6.3 Internal and External Bus Connections

If you have both internal and external SCSI device connections to your host adapter, you must terminate the last internal and last external devices on the SCSI bus. You must also 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 -

Terminators Enabled

Does not end Bus -

Terminators Disabled

Host Adapter Termination

Automatically Disabled

Do not end Bus -

Terminators Disabled

Last Device on Bus -

Terminators Enabled

Detailed Installation Procedure

2-21

Page 37
Image 37
LSI SYM8953U manual Internal and External Bus Connections, Internal and External Scsi Device Termination