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422 VM/HSC 6.0 System Programmer’s Guide
1st ed., 6/30/04 - 312579601
Loading Cartridges Into the Library
There are different methods that can be used to load an LSM with cartridges at installation
time. There are advantages and disadvantages involved for each method. The following
brief discussions may help you determine which loading method is best for your
installation.
Loading Cartridges for Immediate Use in a Newly Installed LSM
If you are loading cartridges into an LSM that must be placed into production, it may be
advantageous to begin entering volumes a few at a time through the CAP.
Tape cartridges can be entered into an LSM by using the ENter command or ENTEr utility
to enter cartridges through the CAP.
Refer to “Enter Cartridges Utility” on page 249 for information about the ENTEr
Cartridges utility, the syntax, and parameters. Refer to the ‘‘CAP Preference (CAPPref)
Command and Control Statement’’ in the HSC Operator’s Guide for information about
how to set the CAP in automatic mode. Refer to the HSC Operator’s Guide for
information about the ENter command.
The control data set is updated with each load of cartridges entered through the CAP.
If you begin entering cartridges containing data sets known to be required by regularly
scheduled jobs, these volumes are immediately available for use. The obvious advantage
of using this method is that the LSM and any cartridges entered are immediately available
for use.
Loading Cartridges for Later Use in a Newly Installed LSM
If you are loading cartridges into an LSM that is not scheduled for production
immediately, it may be to your advantage to manually load the entire LSM. The cartridges
must be previously initialized to use this method.
After all cartridges are loaded into cells, run the AUDIt utility for the LSM to update the
control data set.
This method of loading cartridges into an LSM is faster for physically moving the
cartridges and takes less operator time. However, running the AUDIt utility for an entire
LSM can take a significant amount of time.
Reduce Pass-Thrus
The number of pass-thrus required to mount, dismount, and replace cartridges in LSMs
can impact library performance. In a large or busy ACS, this impact may be significant
especially during periods of heavy mount activity. There are three categories of pass-thrus:
• unavoidable
• unnecessary
• scheduled.