Amazon FSx
- What it is
- Fully managed third-party file systems, for when EFS’s Linux/NFS model is the wrong shape.
- The four flavors
- FSx for Windows File Server — native SMB, NTFS, Active Directory integration. The answer for Windows shared drives.
- FSx for Lustre — high-performance computing and ML training; integrates with Amazon S3 to process S3 data at sub-millisecond latency.
- FSx for NetApp ONTAP — full ONTAP feature set (snapshots, dedup, multi-protocol NFS+SMB+iSCSI) for lift-and-shift.
- FSx for OpenZFS — ZFS-backed NFS with snapshots and cloning.
- Not to be confused with
- Amazon Elastic File System (EFS) — Linux/NFS only, AWS-built, fully elastic.
- Exam signal
- “Windows file share” → FSx for Windows File Server. “HPC / ML training scratch storage” → FSx for Lustre.