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20   VM/HSC 6.0 System Programmer’s Guide
1st ed., 6/30/04 - 312579601
• automatic cleaning of tape transports with cleaning cartridges under the control of 
the HSC and the library 
• restricting the write access to volumes in the library through the Virtual Thumbwheel 
feature  
• dual LMU support 
• control data set recovery. 
Facilities Available for User Control of HSC Functions 
There are facilities available for system programmers and operators to use to control 
various system functions. These include:
• macros 
• utilities 
• PARMLIB control statements 
• operator commands. 
Installation Functions 
Installation functions pertain to installation or reconfiguration processing for the HSC 
subsystem. Since these topics are extensive, they are presented in a separate document. 
The HSC Installation Guide presents detailed information about installation planning and 
instructions, including: 
• Planning the configuration 
• Performing preinstallation procedures 
• Installing HSC software 
• Defining the library configuration (LIBGEN) 
• Defining PARMLIB control statements 
• Initializing the control data sets 
• Verifying library generation 
• Starting HSC execution 
• Testing the installation 
• Planning and executing cartridge migration into the library 
• Migration planning 
• Performing library modifications.