Initio INI-9100UW user manual 1 Examples of SCSI bus termination

SCSI bus termination

The SCSI bus structure has a length limitation as well as a requirement for termination at each end of the SCSI cable. The cable is designed to connect in a daisy chain fashion with only one peripheral being connected to another. No branching is permitted in the SCSI bus. The first and last physical SCSI device on the SCSI bus must be terminated (see figure 2-1).

figure 2-1 Examples of SCSI bus termination

The INI-9100U/9100UW host adapter’s auto-termination is software controlled by the SmartSCSI™ Setup Utility. This feature allows the operator to switch on or off the auto-termination. If auto-termination is switched off, the operator can manually adjust termination for the host adapter without the need to remove the cover on the host system each time a change is made in the SCSI bus configuration. There are three ways to manually control terminating the INI-9100U on the SCSI bus (see table 2-1) and there are six ways to terminate the INI-9100UW on the SCSI bus (see table 2-2).

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