Running Service Virtual Machines

Depending on what facilities, features, and products are enabled on your system, you may need to log on to other service virtual machines. For example, if accounting, error recording (EREP) and symptom record recording is active on z/VM®, you need to log on to the accounting, error recording, and symptom record recording virtual machines. From these virtual machines, you enter CP and CMS commands to create accounting, EREP, and symptom record reports.

If you are using any of the following z/VM facilities and optional features, you must operate the service virtual machines they require:
  • Directory Maintenance Facility for z/VM
  • Performance Toolkit for z/VM
  • RSCS Networking for z/VM
  • TCP/IP for z/VM
Some licensed programs may require you to operate service virtual machines. For example, if your installation has installed any of the following licensed programs, you must operate the service virtual machines they require:
  • VM/Pass-Through Facility
  • VTAM® Communications Network Applications (VCNA)
  • VM/Virtual Telecommunications Access Method (VM/VTAM).

For information about when and how to stop these service virtual machines, see the appropriate licensed program documentation.

Finally, each time you bring up z/VM, CP automatically logs on a virtual machine called AUTOLOG1. The AUTOLOG1 userid is the default. You can change the AUTOLOG1 userid by using the STARTUP operand on the SYSTEM_USERIDS statement in the system configuration file. Your installation may use this service virtual machine to perform some system initialization tasks automatically. For example, AUTOLOG1 or the userid you specified on the SYSTEM_USERIDS statement in the system configuration file, can start up other virtual machines or dedicate devices to them.