You can use an EFS file system in one VPC based on the Amazon VPC service at a time. That is, you create mount targets in a VPC for your file system, and use those mount targets to provide access to the file system.
You can mount the EFS file system from these targets:
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Amazon EC2 instances in the same VPC
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EC2 instances in a VPC connected by VPC peering
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On-premises servers by using AWS Direct Connect
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On-premises servers over an AWS virtual private network (VPN) by using Amazon VPC
A VPC peering connection is a networking connection between two VPCs that enables you to route traffic between them. The connection can use private Internet Protocol version 4 (IPv4) addresses. For more information on how Amazon EFS works with VPC peering, see Mounting EFS file systems from another AWS account or VPC.
To change the VPC for a file system
The following are the steps that you'll perform to change the VPC for an EFS file system's network configuration.
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Delete each mount target assigned to the file system. For instructions, see Deleting mount targets.
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When the Mount targets status for each mount target is Deleted, assign the new VPC and create new mount targets for the file system. For instructions, see Creating mount targets.
