Shared Storage Selection in Operations
Explore how to select between Amazon EFS and FSx for shared storage in AWS operations. Understand key differences in mounting, access methods, failure diagnostics, cost factors, and verification steps to ensure operational reliability and scalability in multi-node environments.
Multiple compute nodes need shared POSIX-like access for a stateful component, and the same mount succeeds on one host but fails on another. That symptom forces a decision that is partly architectural and mostly day-2. A shared file storage class that matches the access method and recovery expectation needs to be picked, and then every client's ability to mount, read, and write needs to be proven.
The two candidate classes are Amazon EFS and the Amazon FSx family. This lesson holds the application design fixed. The only thing being chosen is a supportable shared storage target, plus a verification plan that quickly separates DNS, network, and permissions failures from service-side issues.
Compare what we can observe and tune
The day-2 differences start with how clients attach and what can be validated under load. EFS-style deployments typically behave like a shared NFS endpoint that many clients mount concurrently, while FSx-style deployments depend on a chosen filesystem type with its ...