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48 Troubleshooting and Diagnostics
Installation Problems
Usually, problems encountered during the installation of your Scalar Library are caused by improper SCSI bus
configuration, application software configuration errors or by an OS that has not been correctly configured. If the
application software that you are attempting to use is not communicating with your library after installation, check
the following:
4 SCSI IDs
Make sure that the IDs you selected for the library robotics and tape drives are not the same as the ID used by any
other SCSI device on that bus, including the host SCSI adapter card.
4 SCSI Cabling
Verify that all SCSI cables are securely connected at both ends and that the bail locks are secured. Also, check the
length and integrity of your SCSI cabling. The total length of all cables connected to a SCSI II bus must not
exceed 9.85 feet (3.0 meters) for single-ended configurations and 82 feet (25 meters) for differential
configurations. Try replacing suspected cables with known good cables.
Note
The length of the Scalar Library internal SCSI cables is 3 feet. This
length must be included in any calculations of cable length.
4 Termination
Check that all SCSI buses are properly terminated.
4 Compatibility
Ensure that your library and its tape drives are compatible with the SCSI adapter card and application software
you plan to use.
Note
For a list of compatible SCSI adapters and application software, call
adic’s Customer Assistance Center at (206) 883-HELP (4357).
4 SCSI Adapter Card Installation
Verify that you have installed your SCSI adapter card correctly. Refer to the documentation that came with your
card for installation and troubleshooting instructions. Pay particular attention to any steps describing the settings of
various jumpers and/or switches on the card. Check that the card is seated fully in your computers I/O connector.
4 Application Software Installation
Refer to the documentation included with your software for instructions on how to verify installation.
Library and Drive Operational Problems
Most problems with the operation of your Scalar Library and/or DLT drives happen when the drives are not
cleaned regularly or when you use incorrect data cartridges. If you have been successfully operating the
application software and library in the past, but are now experiencing problems reading and writing data, check the
following: