1. What is Amazon Elastic File System?
Answer: Amazon Elastic File System (Amazon EFS) is a fully managed file storage service that provides scalable, highly available, and secure file storage for use with Amazon EC2 instances and on-premises servers.
2. How does Amazon EFS work with Amazon EC2 and other supported compute instances?
Answer: Amazon EFS provides a file system interface, file system access semantics (such as strong consistency and file locking), and a standard file system API that allows you to seamlessly integrate Amazon EFS with your applications and services. Amazon EFS works with Amazon EC2 instances and other supported compute instances, including on-premises servers, using the Network File System version 4 (NFSv4) protocol.
3. What are the different storage classes available in Amazon EFS?
Answer: Amazon EFS offers two different storage classes: Standard and One Zone. The Standard storage class provides high availability and durability by storing data across multiple Availability Zones in a region. The One Zone storage class provides lower-cost storage for workloads that don't require the same level of availability and durability as the Standard storage class.
4. How do I create and manage a file system in Amazon EFS?
Answer: You can create and manage file systems in Amazon EFS using the AWS Management Console, AWS CLI, or SDKs. To create a file system, you need to specify the performance mode, throughput mode, storage class, and other configuration options. You can also manage mount targets, security groups, and access points for your file systems.
5. How do I monitor and troubleshoot performance issues in Amazon EFS?
Answer: You can monitor and troubleshoot performance issues in Amazon EFS using various tools and techniques, such as CloudWatch metrics, performance modes, throughput modes, and NFS client mount settings. You can also optimize small-file performance, directory performance, and NFS read_ahead_kb size to improve performance. Additionally, you can use AWS Backup and EFS replication to protect and replicate your data.