# Using additional SMC servers for high availability

You can install additional Management Servers and Log Servers for high availability.

The high availability (HA) solution includes automatic incremental replication of the configuration data stored on the Management Server. This way, manual intervention is minimized, and the SMC can be fully managed and monitored without manually reinstalling and restoring a backup.

A Management Server and a Log Server are required for configuration changes to and system monitoring of engines. Although engines work independently without the SMC according to their installed configuration, configuration changes and system monitoring are not possible without a Management Server and Log Server. The Management Server in particular is a critical component, as it is the only place where the full configuration information is stored.