Amazon Elastic File System (EFS) is a scalable and fully managed file storage service provided by Amazon Web Services (AWS). It is designed to provide a simple and flexible way to create and manage shared file storage that can be accessed concurrently by multiple Amazon EC2 instances.
With Amazon EFS, users can create file systems that automatically scale as data storage needs grow or shrink, without the need to provision or manage storage capacity. This elasticity makes it well-suited for a wide range of use cases, such as web hosting, content management, data sharing, and application development.
One of the key features of Amazon EFS is its support for the Network File System (NFS) protocol, which allows it to be mounted and accessed by multiple EC2 instances simultaneously. This makes it easy to share data and collaborate across multiple instances within the same VPC (Virtual Private Cloud) or across multiple VPCs.
Amazon EFS is designed for high availability and durability, providing a 99.99% availability SLA and automatically replicating data across multiple Availability Zones within a region. This ensures that data remains accessible even in the event of hardware failures or network disruptions.
EFS also provides robust security features, including support for AWS Identity and Access Management (IAM) for access control and encryption at rest and in transit to protect data from unauthorized access.
In summary, Amazon EFS is a fully managed, scalable, and highly available file storage service that is designed to provide shared file storage for Amazon EC2 instances. Its elasticity, support for the NFS protocol, high availability, and security features make it an ideal solution for a wide range of use cases, from content management and web hosting to data sharing and application development.