Vantage on AWS (DIY) includes automatic node failure recovery capabilities, which apply to EC2 instances using EBS. Node failures may be related to hardware, software, or the operating system. When a node fails, Node Failure Recovery:
Automatically spins up a hot standby node instance
Detaches the attached storage of the failed node
Configures a new instance
Reattaches the attached storage to the new instance
Reinstates the configuration
The replacement node is based off an image recorded when the system is first launched, or an updated image if the proper tools are run after a software upgrade. The replacement node has the same secondary IP, elastic IP, and identifiers as the replaced node. By default, the downed node continues running and can be used for diagnostic purposes.