Chapter 5. Red Hat OpenShift installation planning and considerations 89
PowerVC HA
This architecture includes the following PowerVC recommendations:
/SM590000Each Host Group (Availability Zone) must include more that one server to allow Simplify 
Remote Restart, DRO, and Host evacuation.
/SM590000Automated Remote Restart must be enabled at the Host Group level. When an error 
causes a server outage, a virtual machine that is configured with the remote restart 
capability can be restarted automatically on a different physical server. 
Figure 5-8 shows how Simplify Remote Restart is working with HMC configuration.
Figure 5-8   Simplify Remote Restart with PowerVC and HMC