The VM2000 administrator can create the backup of a VM2000 configuration using the /SAVE-VM-CONFIGURATION command.
In this case the components of the VM2000 configuration are stored in a backup file on the monitor system's home pubset, see section "Backup file for a VM2000 configuration".
Some components of the VM2000 configuration are not backed up, see section "VM2000 components not backed up".
Persistent VMs are not saved because their persistent VM definitions are also available after the Server Unit has been rebooted and can be reactivated with /ACTIVATE-VM-DEFINITION. Therefore, for each persistent VM a warning (VMS4817) is issued in the case of /SAVE-VM-CONFIGURATION.
A VM2000 configuration can only be backed up successfully if the prerequisites described below are fulfilled at command entry time:
No VM may be in state IN HOLD (WAIT)
All VMs in state RUNNING must have reached SYSTEM READY
Memory reconfiguration may not be in progress
VM Migration may not be in progress
Otherwise the command is rejected.
When the prerequisites are fulfilled and there is an attached extra CPU, the warning message VMS4814 is issued. This is used to indicate that (chargeable) extra CPUs will be attached when the backup is read in.