EFS
Amazon Elastic File System (Amazon EFS) provides simple, scalable file storage for use with Amazon EC2.
With EFS, storage capacity is elastic, growing and shrinking automatically as you add and remove files, so your applications have the storage they need, when they need it.
Multiple Amazon EC2 instances can access an EFS file system at the same time, providing a common data source for workloads and applications running on more than one instance or server
With Amazon EFS, you pay only for the storage used by your file system
You don't need to provision storage in advance and there is no minimum fee or setup cost.
Amazon EFS uses the protocol V4 and V4.1 to share the file system
Amazon EFS file systems store data and metadata across multiple Availability Zones in a region and can grow to petabyte scale, drive high levels of throughput, and allow massively parallel access from Amazon EC2 instances to your data.
(Note: Amazon EFS is a file storage service for use with Amazon EC2. Amazon EFS provides a file system interface, file system access semantics (such as strong consistency and file locking), and concurrently-accessible storage for up to thousands of Amazon EC2 instances whereas Amazon S3 is an object storage service. Amazon S3 makes data available through an Internet API that can be accessed anywhere. We can use any az for mounting. Max 128 active connection at same time)
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