StorageTek Host Software Component 6 사용자 설명서

1st ed., 6/30/04 - 312579601

The full service level of operation for the HSC provides all of the functions available and 
necessary to invoke and sustain complete library operations. These functions include: 

• mount/dismount processing 
• CAP processing 
• cartridge and cell inventory management 
• LMU access 
• library resource recovery 
• support for utilities which require services from the hardware 
• support for the tape management interface. 

At initialization, the HSC builds data areas, loads program modules, and sets up the 
required operating system services to support the two service levels of operation. 
Termination of the HSC, including normal termination and abnormal termination through 
abends removes the service level structure and services. 

For example, on your system with the HSC operating at full service level, all commands, 
utilities, etc. are fully functional. Should you decide to manually intervene by issuing the 
Service Level command (SRVlev) to change from full to base service level, the 
functionality of the HSC is reduced. Refer to ‘‘Adding SMF Parameters’’ in the HSC 
Installation Guide.

Conversely, you can change the base service level operation to full service level.