Failure And Exception Condition Reporting - IBM TotalStorage 3494 Tape Library Operator's Manual

v Console messages concerning the 3494 Tape Library are being generated. The
v A service representative has requested time on the 3494 Tape Library to correct a
The primary indication that a problem has occurred is a host console message. The
following topic describes what actions to take based on specific console messages.

Failure and Exception Condition Reporting

The library reports failures or exception conditions that it detects to the attached
hosts for operator action. Most failures or exception conditions are also logged at
the host for later use by a service representative. Failures or exception conditions
fall into one of the following categories:
v A failure or exception condition is detected in a request from a host to perform a
v Some library function requests, such as mounting a cartridge, are queued within
v A failure or exception condition is detected that is independent of any specific
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3494 Tape Library Operator Guide
– The 3494 Tape Library or attached tape drives detected a failure or exception
condition that is preventing one or more operations from completing. The
3494 Tape Library reports the condition to the host for operator or service
representative handling. See "Failure and Exception Condition Reporting" for
the conditions and required actions.
following are possible conditions:
– A failure or exception condition occurs while the 3494 Tape Library is
performing one or more requested operations. The 3494 Tape Library reports
the condition to the host, which generates a host console message to inform
you of the condition. See "Failure and Exception Condition Reporting" for the
conditions and required actions.
– The Library Manager console provides information about many of the failure
and exception conditions reported to the host. Although the host console
messages are the primary source for problem determination, the information
at the Library Manager is useful during operator and service representative
problem resolution. See "Information Provided at the Library Manager
Console" on page 453 for the information and required actions.
problem.
In addition to possible host console messages, 3494 Tape Library or associated
tape drive failures that cause exception conditions are logged in the error
recording data set on the host. MVS, OS/390, and z/OS hosts, for example, log
errors in file SYS1.LOGREC. A service representative reviews the data sets as
part of normal diagnosis. Also, when errors that the 3494 Tape Library recovers
internally exceed a threshold, the condition is also logged for action by the
service representative.
library function.
The requested function is rejected, and the reason is reported back to the host
immediately.
the Library Manager for subsequent execution. A failure or exception condition
can be detected during the execution of a queued library function request.
The host that requested the 3494 Tape Library function is notified that a failure
or exception condition was detected during the execution of the request. The
notification also includes the reason for the failure or exception condition.
requested 3494 Tape Library function.
All hosts attached to the 3494 Tape Library are notified of the failure or
exception condition.