Amazon Elastic File System

{{Short description|Cloud-based storage service}}

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{{notability|Products|date=July 2018}}

{{third-party|date=July 2018}}

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{{Infobox software

| logo =

| name = Amazon Elastic File System (EFS)

| developer = Amazon.com

| released = {{Release date and age|2016|06|29}}.{{cite web|url=https://aws.amazon.com/about-aws/whats-new/2016/06/amazon-elastic-file-system-efs-is-now-generally-available/|title=Amazon Elastic File System (Amazon EFS) is Now Generally Available|website=Amazon Web Services, Inc.|access-date=28 June 2018}}{{cite web|url=https://techcrunch.com/2016/06/29/awss-elastic-file-system-is-now-ready-for-your-grubby-little-fingers/|title=AWS's Elastic File System is now ready for production use – TechCrunch|website=techcrunch.com|date=29 June 2016 |access-date=28 June 2018}}

| operating system = Cross-platform

| language = English

| genre = Cloud Storage

| license = Proprietary

| website = {{URL|https://aws.amazon.com/efs/}}

}}

Amazon Elastic File System (Amazon EFS) is a cloud storage service provided by Amazon Web Services (AWS) designed to provide scalable, elastic, concurrent with some restrictions,{{cite web|url=https://docs.aws.amazon.com/efs/latest/ug/how-it-works.html|title=Amazon EFS: How It Works - Amazon Elastic File System|website=docs.aws.amazon.com|access-date=28 June 2018}} and encrypted{{cite web|url=https://docs.aws.amazon.com/efs/latest/ug/encryption.html|title=Encrypting Data and Metadata in EFS - Amazon Elastic File System|website=docs.aws.amazon.com|access-date=28 June 2018}} file storage for use with both AWS cloud services and on-premises resources.{{cite web|url=https://aws.amazon.com/efs/|title=Amazon Elastic File System (Amazon EFS) – Cloud File Storage – Amazon Web Services (AWS)|website=Amazon Web Services, Inc.|access-date=28 June 2018}} Amazon EFS is built to be able to grow {{cite web|url=https://cloud.netapp.com/blog/ebs-efs-amazons3-best-cloud-storage-system|title=EBS vs S3 vs EFS: Which is the Best AWS Storage System|first=Gali|last=Kovacs|website=netapp.com|access-date=28 June 2018}} and shrink automatically as files are added and removed. Amazon EFS supports Network File System (NFS) versions 4.0 and 4.1 (NFSv4) protocol,{{cite web|url=https://docs.aws.amazon.com/efs/latest/ug/accessing-fs-nfs-permissions.html|title=Network File System (NFS)–Level Users, Groups, and Permissions - Amazon Elastic File System|website=docs.aws.amazon.com|access-date=28 June 2018}} and control access to files through Portable Operating System Interface (POSIX) permissions.{{cite web|url=https://docs.aws.amazon.com/efs/latest/ug/whatisefs.html|title=What Is Amazon Elastic File System? - Amazon Elastic File System|website=docs.aws.amazon.com|access-date=28 June 2018}}