everRun software allows two individual everRun computers to work as a single, highly-available or fault-tolerant system. Each computer is called a physical machine (PM) or node.
Both PMs:
Run the same host operating system (CentOS)
Contain the same data, memory and storage (synchronized via direct Ethernet links between the two PMs)
Support virtual machines running supported guest operating systems
The data and memory contents of the two PMs are synchronized via direct Ethernet links. Other Ethernet connections to a network support virtual machine and management operations.