EFS versus FSx for Windows File Server

23 Oct 2020

Learn how EFS differs from FSx for Windows File Server.

EFS FSx for Windows File Server
Type

NAS

NAS

Interface

NFSv4

SMB

Accessibility

EC2, On-Premises

EC2, On-Premises

Latency

High

Medium

Throughput

Default limit is 1,000 MB/s but can be increased

Hundreds of GB/s

Durability

99.999999999%

Unspecified (probably >99.8%)

Availability

99.99%

99.9%

Replication

Multi-AZ

Multi-AZ (optional)

Backups/Snapshots

AWS Backup

Volume Shadow Copy Service (VSS)

Storage Costs (GB/month)

$0.30

$0.23