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Chapter 8
128
Exabyte 440 and Exabyte 480
Problems w ith library installation
If your library and application software are not communicating
after installation, check the following:
✔ Single-ended, low-voltage differential (LVD), and
high-voltage differential (HVD) devices. Make sure all
devices on the bus are all singled-ended or LVD or all HVD.
You can connect single-ended and LVD devices to the same
bus. However, mixing the two types of devices results in all
devices on the bus operating as single-ended devices. These
devices include the controller cards, cables, and terminators.
✔ Narrow SCSI and wide SCSI. Make sure all devices within
the library are either narrow SCSI or wide SCSI. Do not mix
narrow and wide SCSI devices within the library.
✔ SCSI cable lengths. Make sure the internal and external SCSI
cabling does not exceed maximum lengths (see page 149).
✔ Termination. Make sure your bus is properly terminated as
described in Appendix B. If another SCSI device previously
terminated the SCSI bus and is no longer at the physical end
of the bus, be sure to remove the terminators from that device.
✔ SCSI bus connections. Make sure that all SCSI cables and
terminators are securely connected to the appropriate SCSI
connectors on the back of the library. See page 36 for more
information.
✔ SCSI IDs. Make sure that the SCSI IDs you selected for the
tape drives and library are not the same as IDs used by any
other SCSI device on that bus, including the SCSI adapter
card. The library does not check for duplicate IDs. See page 52
for instructions.