Amazon Elastic File System

User Guide

What Is Amazon Elastic File System?
How it Works
Setting Up
Getting Started
- Step 1: Create Your EC2 Resources and Launch Your EC2 Instance
- Step 2: Create Your Amazon EFS File System
- Step 3: Connect to Your Amazon EC2 Instance and Mount the Amazon EFS File System
- Step 4: Sync Files from Existing File Systems to Amazon EFS Using EFS File Sync
- Step 5: Clean Up Resources and Protect Your AWS Account
Creating Resources for Amazon EFS
- Creating File Systems
- Creating Mount Targets
- Creating Security Groups
Using File Systems
- NFS-Level Users, Groups, and Permissions
- Amazon EFS File Sync
Using amazon-efs-utils
Managing File Systems
- Managing Network Accessibility
- Managing Tags
- Metering File System and Object Sizes
- Managing EFS File Sync
- Deleting a File System
Mounting File Systems
- Mounting Automatically
- Additional Mounting Considerations
Monitoring File Systems
- Monitoring Tools
- Monitoring CloudWatch
- Logging Amazon EFS API Calls with AWS CloudTrail
Performance
- On-Premises Performance Considerations
- Amazon EFS Performance Tips
Security
- Encrypting Data and Metadata in EFS
Limits
Troubleshooting Amazon EFS
- Troubleshooting Mount Issues
- Troubleshooting Encryption
Troubleshooting EFS File Sync
Walkthroughs
- Walkthrough 1: Create and Mount a File System Using the AWS CLI
- Walkthrough 2: Set Up an Apache Web Server and Serve Files
- Walkthrough 3: Create Writable Per-User Subdirectories
- Walkthrough 4: Backup Solutions for Amazon EFS File Systems
- Walkthrough 5: Create and Mount a File System On-Premises with AWS Direct Connect
- Walkthrough 6: Enforcing Encryption on an Amazon EFS File System at Rest
- Walkthrough 7: Sync Files from On-Premises by Using EFS File Sync
- Walkthrough 8: Sync a File System from Amazon EC2 to Amazon EFS Using EFS File Sync
Authentication and Access Control
- Overview of Managing Access
- Using Identity-Based Policies (IAM Policies)
- Amazon EFS API Permissions Reference
Amazon EFS API
- Actions
- Data Types
Additional Information
- Backup with AWS Data Pipeline
- Mounting File Systems Without the EFS Mount Helper
  - Mounting on Amazon EC2 with a DNS Name
  - Mounting with an IP Address
Document History

How Do I Use Amazon EFS Metrics?

The metrics reported by Amazon EFS provide information that you can analyze in different ways. The list below shows some common uses for the metrics. These are suggestions to get you started, not a comprehensive list.

How do I?	Relevant Metrics
How can I determine my throughput?	You can monitor the daily `Sum` statistic of the `TotalIOBytes` metric to see your throughput.
How can I track the number of Amazon EC2 instances that are connected to a file system?	You can monitor the `Sum` statistic of the `ClientConnections` metric. To calculate the average `ClientConnections` for periods greater than one minute, divide the sum by the number of minutes in the period.
How can I see my burst credit balance?	You can see your balance by monitoring the `BurstCreditBalance` metric for your file system. For more information on bursting and burst credits, see Throughput Scaling with Bursting Mode.

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