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Step 5. Terminate the Drive and Supply TERMPOWER (SCSI Drive
Only)
If the tape drive is the last device on the SCSI bus, you must terminate the bus
outside the enclosure or internally at the SCSI ID connector (see 2 in Figure 2 on
page 10).
To terminate the bus internally, locate one of the five jumpers shipped with the
Ultrium Tape Drive and place it on the SCSI ID connector as shown in the following
figure. Place the jumper on the pins that are shaded.
To supply TERMPOWER to the bus, locate one of the five jumpers shipped with the
Ultrium Tape Drive and place it on the SCSI ID connector as shown in the following
figure. Place the jumper on the pins that are shaded.
A67E0049
Step 6. Set the Arbitrated Loop Physical Address (Fibre Channel Drive
Only)
Each device on a Fibre Channel loop must have an Arbitrated Loop Physical
Address (AL_PA) to communicate. The AL_PA identifies the device on the loop. To
set the Ultrium Tape Drive’s AL_PA, you must place jumpers on specific pins in the
drive’s loop identifier (LID)/status connector. The placement of the jumpers indicates
whether you want to choose the LID yourself (each LID corresponds to a specific
AL_PA) or whether you want the drive to choose the AL_PA by arbitrating it with
other devices on the loop. Valid LIDs and their corresponding AL_PAs are provided
in this section.
Note: A Loop ID is part of a contiguous range of values; valid AL_PA values are
not in a contiguous range.
In addition to establishing the AL_PA, by moving Feature Switch 3 on the drive to
ON or off, you can set the drive so that it provides one of the following functions:
v Status about the Fibre Channel loop (through the use of external indicators in an
enclosure)
v Additional LIDs
The sections that follow describe how to select the AL_PA. They also describe how
to set Feature Switch 3 so that the drive gives status about the loop or provides
additional LIDs.
Chapter 3. Installing 15
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