Enabling high availability of Amazon EC2 instances on AWS Outposts servers (Part 3)

This article (Part 3) demonstrates automating EC2 instance recovery on AWS Outposts servers using third-party storage for persistent data.

• CloudWatch monitors EC2 StatusCheckFailed_Instance metric and triggers SNS notifications
• Lambda function automatically relaunches failed instances on secondary Outposts server
• Instances connect to existing boot/data volumes on third-party storage (Dell, HPE, NetApp, Pure)
• Achieves zero RPO and RTO equal to instance launch time
• Requires two colocated Outposts servers with <5ms network latency
• Launch wizard configures iSCSI connections and generates CloudFormation templates
• Supports active-active or active-passive resilient configurations
• Enables N+1 fault tolerance for stateful workloads on-premises

This solution provides automated high availability for Outposts servers using infrastructure-as-code and third-party storage integration, reducing application downtime during hardware failures.