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Chapter 7. Troubleshooting
94
Library Operation Problems
Library hangs, will not boot, or does not communicate with host
1. Check that the library power cord is plugged into an active 120-volt or 220-volt
AC power source.
Newer power supplies switch voltages automatically, but older power supplies
have a switch that must be set to the current power source output or the power
supply may be damaged.
2. SCSI considerations:
• Ensure that all attached SCSI devices are using unique SCSI IDs.
• Ensure that all SCSI cables are attached and secure.
• Ensure that proper cables are used (proper termination of cables, proper
pinout of cables). Many non-Spectra Logic SCSI cables have impedance
qualities which do not meet SCSI standards.
• Ensure that the SCSI bus is terminated properly. Make sure that the host
controller card used automatic/manual termination, and that it is terminated
correctly. Terminators used on the library should be labeled Active for
single-ended libraries and Differential for differential libraries.
• Ensure that all devices attached to bus have the same SCSI configuration
(either single-ended or differential).
• Ensure that the SCSI cabling is of proper length for that number of attached
devices and SCSI configuration (single-ended or differential). Make sure you
take into account both internal and external SCSI cabling for all devices
(check the bus length limits in Selecting a SCSI Bus for the Library (SCSI
Libraries Only) on page 22).
3. Make sure that the library firmware is not corrupted.
This can happen if power is
lost or the library is reset while upgrading the firmware. To solve this, use the forced
firmware reload procedure as
described in Forcing a Firmware Reload on page
70.
Library boots, but will not come to Unit Ready state
1. Check all power and SCSI connections as described in the previous problem
description.
2. If you are using an Adaptec 2944 SCSI controller card, download the latest
Adaptec drivers from the Adaptec Web site.
Install them on your host system, then reboot the host and restart the library.