9-64 Upgrading Your Server

SCSI Interface

This section describes the connection pattern of the SCSI interface.

Baseboard

Two Ultra 320 SCSI connectors are installed on the baseboard. The Ultra 320 SCSI (A) connector is connected to the 3.5-inch hard disk bay in the normal status.

The SCSI (B) connector is provided to connect with the built-in option installed in the 5.25-inch device bay or an external SCSI device. When the server is delivered, the SCSI (B) connector is connected with the cable for using the 5.25-inch device bay. To use an external SCSI device, it is necessary to connect the SCSI cable coming with the server instead.

Set SCSI IDs to ID0 - ID6 (the IDs should

External SCSI cable

be unique in the daisy chain connection).

 

The termination setting should be "valid"

 

for the furthest device.

SCSI (B) connector

 

To external SCSI

 

device.

SCSI cable for

 

 

5.25-inch device

 

 

 

3.5-inch disk bay

Because both the external and

 

 

Set SCSI IDs to ID0 -

5.25-inch device SCSI cables

SCSI (A) connector

 

should be connected to the

 

Optional device

ID6. The termination

SCSI (B) connector, either of the

Termination

(SCSI)

setting should be

cables can be used at a time.

 

"invalid."

 

connector

 

 

The wide-narrow conversion connector (50 pins) is connected to the cable connector for a 5.25-inch device. To install a device with 68-pin connector on the 5.25-inch device bay, remove the wide- narrow conversion connector and then connect the 68-pin connector.

To connect external SCSI devices, install the termination connector on the device at the furthest position or specify the termination with the internal setting of the device.

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NEC 140Rc-4 manual Scsi Interface, Baseboard