External Drives; Scsi Termination In Internal Drives - HP 330834-B21 - StorageWorks Ultrium 460 Tape Library Drive Module User Manual

Figure 25 SCSI termination in internal drives
As long as this terminator is attached, you do not need to take any further action. However, if you have
other devices attached to the cable, make sure that they have termination removed or disabled.
NOTE:
If you have an internal and external device attached to the same SCSI bus, the HBA will be in the middle
of the cable and thus its termination must be disabled. See the host bus adapter's documentation
for details of how to do this.

External drives

For HP StorageWorks Ultrium external tape drives the enclosure provides active termination.
As long as the drive is the only device on the SCSI chain, no terminators are required. The green ACT
Term LED on the rear of the drive indicates whether auto-termination is active (on) or not (off).
Make sure the terminator is firmly attached to the SCSI-OUT connector on the rear of the device when
you install it.
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SCSI configuration guide