Installing the Tape Library

Step 5: Set the SCSI Interface Mode Switch

 

Step 5: Set the SCSI Interface Mode Switch

 

Do not connect any cables yet.

 

The SCSI interface mode switch, shown below, is on the rear panel between the bus

 

1 and bus 2 SCSI ports.

Figure 1-15

SCSI Interface Mode Switch (Example)

 

 

 

To set the SCSI interface mode switch:

 

 

 

 

1. Determine how to connect the library according to:

 

 

 

• Number of drives in the library and drive type

 

 

 

• Other peripherals (if any) on your system

 

 

 

• Type of SCSI card (differential or single-ended)

 

 

 

 

 

NOTE

 

For best library performance, connect only one library on a SCSI bus.

 

 

 

2. Set the SCSI interface mode switch.

 

 

 

 

 

 

Table 1-4

SCSI Interface Mode Switch Settings

 

 

 

 

 

 

 

Setting

 

PurposeSet to

 

 

 

 

 

 

Term Pwr

 

Sends power to the terminator.

ON in most installations

 

 

 

 

 

 

Termination

 

Terminates the SCSI bus. Functions the

ON if the tape drive is the last device

 

 

 

same as a physical terminator.

on the SCSI chain

 

 

 

 

OFF if another peripheral will connect

 

 

 

 

to the library

 

 

 

 

 

 

DIFF/SE

 

Specifies whether you are using the

DIFF for differential

 

 

 

differential or single-ended port.

SE for single-ended

 

 

 

 

 

 

 

 

 

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