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Amazon FSx for NetApp ONTAP

Definition

Amazon FSx for NetApp ONTAP is a fully managed AWS storage service that provides the capabilities of NetApp's ONTAP file system as a cloud-native offering. It exposes multi-protocol access (NFS, SMB, iSCSI) and inherits ONTAP's enterprise data-management features — notably SnapMirror (cross-region asynchronous replication) and FlexClone (instant copy-on-write volume copies) — as first-class managed primitives on AWS.

Distinguished from the generic Amazon FSx umbrella by its ONTAP-specific capabilities: SnapMirror replication, FlexClone, storage virtual machines (SVMs), ONTAP CLI access, and the full ONTAP data-management stack running under AWS's managed control plane.

Key capabilities (as surfaced by ingested sources)

SnapMirror replication

Cross-region asynchronous block-level replication between FSx for NetApp ONTAP file systems. Configurable schedule (S&P Global uses 15-minute intervals). Data transferred is encrypted in transit using AES-256-GCM. See concepts/snapmirror-replication.

FlexClone technology

Instant copy-on-write volume copies from existing snapshots. Creates a writable clone in under 2 minutes that shares data blocks with the parent volume — consuming minimal additional storage. The clone operates independently of ongoing SnapMirror relationships. See concepts/flexclone-instant-volume-copy.

Security and encryption

  • Data at rest encrypted via AWS KMS keys
  • Data in transit encrypted via SMB Kerberos, NFS Kerberos, or AES-256-GCM (SnapMirror)

Production references

S&P Global Capital IQ (2026-07-07)

S&P Global's Capital IQ financial data platform uses FSx for NetApp ONTAP as the storage layer for a cross-region DR architecture spanning US-East-1 and US-West-2. A four-node geo-distributed WSFC provides the compute tier; SnapMirror at 15-minute intervals replicates to the DR region; daily-refreshed FlexClone volumes provide sub-15-minute read-only failover. The architecture delivers RPO of minutes-to-15-minutes and read-only RTO under 15 minutes for financial services regulatory compliance.

(Source: sources/2026-07-07-aws-sp-globals-disaster-recovery-fsx-netapp-ontap)

Positioning relative to other FSx variants

FSx for NetApp ONTAP is one of four FSx file-system types: - FSx for Windows File Server — SMB-only, Active Directory integration - FSx for Lustre — HPC/ML parallel file system - FSx for NetApp ONTAP — enterprise multi-protocol with ONTAP data management - FSx for OpenZFS — Linux workloads migrating from on-prem ZFS

The ONTAP variant is positioned for customers with existing NetApp workflows who want cloud-native infrastructure without losing ONTAP's mature data-management stack (snapshots, clones, replication, tiering).

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