Q-Logic manual Scsi termination, Table A-4. QLA12160 Ports

Configuration Settings A – Fast!UTIL

■SCSI termination

Termination for the QLA12160 board can be set in one of three ways:

❑Automatic (default)

❑Manual (through Fast!UTIL)

❑Jumpers

NOTE: The last SCSI device on each end of the SCSI bus must be terminated.

The QLA12160 board is a dual-port host adapter. Each port is a separate SCSI bus and must be terminated independently. The port one and two connectors are listed in table A-4.

Table A-4. QLA12160 Ports

Port	QLA12160 Port
	Connector
One	J1 and J3
Two	J2

The following text explains automatic and manual termination. See section B.2 for jumper termination instructions.

❑Auto. SCSI termination requirements are sensed by the board and set automatically. The default is Auto.

With QLA12160 boards, the Auto setting assumes that port one is at one end of the SCSI bus and enables termination for port one. If you are using a single port-one connector, the Auto setting assumes that port one is at the end of the SCSI bus and enables termination for port one. If you have devices connected to both port one connectors, the Auto setting disables termination for port one.

❑Enabled. This setting overrides termination requirements sensed by the board, assumes that the selected port is at one end of the SCSI bus, and enables termination.

❑Disabled. SCSI termination is disabled. This setting overrides termination requirements sensed by the board. Use this setting when J1, J2, or J3 is not at one end of the SCSI bus. For example, use this setting when you have wide devices daisy chained to the QLA12160 J1, J2, or J3 connector with a single cable and the J1, J2, or J3 connector is not at the end of the cable.

❑High Only. High termination is enabled. This setting overrides termination requirements sensed by the board.

Use this setting for the QLA12160 board’s port one (J1 or J3) when you have a wide device connected to one connector and a narrow device

A-6 DC8151101-00 C