Resilience in Amazon EFS - Amazon Elastic File System
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

Resilience in Amazon EFS

The Amazon global infrastructure is built around Amazon Web Services Regions and Availability Zones (AZs). Amazon Web Services Regions provide multiple physically separated and isolated AZs, which are connected with low-latency, high-throughput, and highly redundant networking. With AZs, you can design and operate applications and databases that automatically fail over between zones without interruption. AZs are more highly available, fault tolerant, and scalable than traditional single or multiple data center infrastructures.

Amazon EFS file systems are resilient to one or more Availability Zone failures within an Amazon Web Services Region. Mount targets themselves are designed to be highly available. As you design for high availability and failover to other AZs, keep in mind that while the IP addresses and DNS for your mount targets in each AZ are static, they are redundant components backed by multiple resources. For more information, see How Amazon EFS works with Amazon EC2 .

For more information about Amazon Web Services Regions and Availability Zones, see Amazon Global Infrastructure.