Technical data

4.2 Error Reporting
Error conditions that occur during normal operation cause a message to appear in the display
along with an FSC. Depending on the class of error detected, the error is also reported to the
system.
4.3 Error Classification
There are four classes of errors based on the severity of the problem:
• Soft
• Medium
• Medium hard
• Hard
4.3.1 Soft Error
Soft errors are usually caused by an operator or a defective tape, and will prevent the drive
from being loaded and placed on line. Soft errors are not reported to the system. However,
an error message and an FSC are posted in the display.
4.3.2 Medium Error
Medium errors occur on the interface and usually do not involve hardware failures. These
errors may be reported to the system. In any case, an error message and an FSC are posted
in the display.
4.3.3 Medium-Hard Error
Medium-hard errors are machine failures that could result in data corruption if the operation
is allowed to continue. Medium-hard errors are reported to the system. An error message
and an FSC may appear in the display.
4.3.4 Hard Error
Hard errors may cause media damage if the tape and servos are not stopped. These errors
usually cannot be recovered at the drive, except by cycling the power switch. Hard errors are
considered catastrophic to the drive and cause the following actions:
• Display of an error message and an FSC
• Transmission of a hard failure report to the host
• Disabling of the TSZ07 servos
• Braking reel motors to a stop
• Release of tape tension
4–2 Troubleshooting