IBM T400F Set the SCSI ID or Arbitrated Loop Physical Address, Setting the SCSI ID with Jumpers

Step 3. Set the SCSI ID or Arbitrated Loop Physical Address

Perform one of the following steps:

vIf you are installing an Ultrium 2 Tape Drive that uses a SCSI interface (Model T400), you must set the drive’s SCSI ID. For instructions, go to “Setting the SCSI ID (SCSI Drive Only)” on this page.

vIf you are installing an Ultrium 2 Tape Drive that uses a Fibre Channel interface (Model T400F), you must set the drive’s Arbitrated Loop Physical Address (AL_PA). For instructions, go to “Setting the Arbitrated Loop Physical Address (Fibre Channel Drive Only)” on page 19.

Setting the SCSI ID (SCSI Drive Only)

You can set the SCSI ID in one of three ways:

vBy placing jumpers on the SCSI ID connector

vBy using a SCSI ID switch that is connected to the SCSI ID connector

vBy issuing a command from the library to set the SCSI ID through the drive’s LDI interface

The sections that follow describe each method of setting the SCSI ID.

Setting the SCSI ID with Jumpers

You can set the SCSI ID on the Ultrium 2 Tape Drive by installing 2-mm jumpers on

the drive’s SCSI ID connector (see in Figure 2 on page 14). Your tape drive may come set to a default SCSI configuration, with jumpers already installed. To change the default SCSI configuration, contact your sales or or technical support representative. You can change the SCSI ID by rearranging, adding, or removing jumpers.

To set the SCSI ID:

__ 1. Locate the SCSI ID connector (see in Figure 2 on page 14).

__ 2. Before attaching the SCSI bus cable to the server, decide the SCSI ID number that you want. Make sure that the ID is not being used by another device.

__ 3. Referring to Figure 5 on page 18, find the ID number that you chose then place jumpers on the connector pins as shown (use a pair of needle-nose pliers to connect the jumpers to the pins that are shaded).

Note: If you set the SCSI ID to 15, the drive will not necessarily be set to that ID; instead, the drive will expect to receive the SCSI ID through a command over its LDI interface.

Chapter 3. Installing 17