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Chapter 2. Host Software Component Functions 45
1st ed., 6/30/04 - 312579601
Refer to Chapter 2, ‘‘Commands, Control Statements, and Utilities’’ in the HSC
Operator’s Guide for detailed information about operator commands and to Chapter
4, ‘‘Utility Functions’’ for information about utilities.
Scratch Threshold Task Restart
The scratch threshold task is a function within the HSC that maintains a count of scratch
volumes that are available within a library. Should this task fail, the HSC is unaware of the
number of scratch volumes available. Thus, a failure of this task could result in impairing
any library processing relying on scratch volumes.
The HSC provides automatic recovery and reinstatement of this task if a failure occurs.
This recovery and reinstatement is transparent to users except for a message displayed on
the system console indicating that the task is reinstated.
In the event, because of unusual circumstances, that the task is not reinstated, a message
on the system console also informs you of the condition and appropriate action to take.
Refer to Chapter 2, ‘‘Commands, Control Statements, and Utilities’’ in the HSC
Operator’s Guide for information about the Warn operator command used to dynamically
modify scratch threshold values.