Supported clients - FSx for ONTAP

Supported clients

FSx for ONTAP file systems support accessing data from a wide variety of compute instances and operating systems. It does this by supporting access using the Network File System (NFS) protocol (v3, v4.0, v4.1 and v4.2), all versions of the Server Message Block (SMB) protocol (including 2.0, 3.0, and 3.1.1), and the Internet Small Computer Systems Interface (iSCSI) protocol.


Amazon FSx doesn't support accessing file systems from the public internet. Amazon FSx automatically detaches any Elastic IP address which is a public IP address reachable from the Internet, that gets attached to a file system's elastic network interface.

The following AWS compute instances are supported for use with FSx for ONTAP:

Once mounted, FSx for ONTAP file systems appear as a local directory or drive letter over NFS and SMB, providing fully managed, shared network file storage that can be simultaneously accessed by up to thousands of clients. iSCSI LUNS are accessible as block devices when mounted over iSCSI.