Skip to content

Enterprise NFS built to scale

High-performance NFS server software with continuous availability and up to 22.7 GB/s throughput on a single 200 GbE port

Product overview

Enterprise NFS, without the open-source limits

Fusion NFS is a commercially supported NFS server that gives your customers fast, dependable access to shared data on your storage platform. It runs in user space at kernel-class speed, so you get the throughput and keep the flexibility. Because it shares its core with Fusion SMB, NFS and SMB clients can work on the same data.

On a single 200GbE port, Fusion NFS delivers 22.7 GB/s, and one deployment scales to over a million exports. Transparent failover keeps exports online if a node goes down, and every deployment comes with a commercial license and dedicated support from Tuxera.

Tuxera Fusion architecture diagram highlighting Fusion NFS alongside Fusion SMB on the shared Fusion core, with multi-protocol support

Faster than the kernel, from user space

In MLPerf Storage 2.0 3D U-Net training on 200GbE, Fusion NFS kept 12 H100 accelerators above 90% utilization, against 9 for kernel NFSD and 5 for NFS-Ganesha, at 22.7 GB/s measured throughput. Fusion NFS also outperforms NFSD on large-IO random reads over RDMA at 200GbE.

Exports

1 million

1,048,575 exports supported per deployment, 50,000 tested

Connections

10 k

NFS connections tested today

MLPerf

12 H100s

Kept above 90% utilization in MLPerf Storage 2.0, against 9 for kernel NFSD

Throughput

22.7 GB/s

Measured single-run throughput, ahead of NFSD and NFS-Ganesha

Downtime

0

Rolling upgrades and global reconfiguration without a restart

Support

24 /7

Commercial support with SLAs and partner-driven feature development

Open-source NFS servers were built for general use. Fusion NFS was designed for enterprise storage products. Because it runs in user space it can be containerized, which kernel NFSD cannot, so each tenant can get its own instance and a single cluster can carry more exports than most providers will ever need. For sovereign and EU-hosted services, Fusion NFS comes from a Finnish company, under a commercial license with no GPL obligations for your own code.

KEY FEATURES

NFS 4.0 and 4.1

Modern, stateful NFS for Linux and HPC clients, with Kerberos authentication through Active Directory or LDAP.

NFS over RDMA

High throughput with low CPU for AI and HPC, plus client trunking across multiple network paths per client for bandwidth and resilience.

User mode

Runs outside the kernel, in containers or on bare metal. Each tenant can have its own instance, and global settings change without a restart.

Scale-out and rolling upgrades

Scale-out clusters where clients ride through node loss, with cluster rolling upgrades at zero downtime.

Massive export scale

1,048,575 exports per deployment and 10,000 tested connections, against 1,000 exports and 4,000 connections for Ganesha.

Multiprotocol with Fusion SMB

NFS locks and SMB opens are coordinated in one place, and NFSv4 ACLs are stored centrally and kept consistent with Windows ACLs, so Linux compute, Windows desktops and Mac workstations work on one copy of the data.

NFS 4.0 and 4.1

Modern, stateful NFS for Linux and HPC clients, with Kerberos authentication through Active Directory or LDAP.

NFS over RDMA

High throughput with low CPU for AI and HPC, plus client trunking across multiple network paths per client for bandwidth and resilience.

User mode

Runs outside the kernel, in containers or on bare metal. Each tenant can have its own instance, and global settings change without a restart.

Scale-out and rolling upgrades

Scale-out clusters where clients ride through node loss, with cluster rolling upgrades at zero downtime.

Massive export scale

1,048,575 exports per deployment and 10,000 tested connections, against 1,000 exports and 4,000 connections for Ganesha.

Multiprotocol with Fusion SMB

NFS locks and SMB opens are coordinated in one place, and NFSv4 ACLs are stored centrally and kept consistent with Windows ACLs, so Linux compute, Windows desktops and Mac workstations work on one copy of the data.

Frequently asked Questions

Why choose Fusion?

Get answers to the most commonly asked questions, or reach out if your question isn’t listed here. 

Why NFS and why now?

For nearly a decade, Tuxera has produced Fusion SMB to deliver an enterprise-grade SMB server that replaces Windows Server and Samba, whether on-premises or in the cloud. Flexible, powerful and now the world’s most advanced SMB server for Linux.

We are now focusing on NFSD and Ganesha. We have identified a market need for an enterprise NFS to serve the AI, ML and HPC sectors. Fusion SMB features like RDMA, scale-out, and zero-downtime cluster rolling upgrades will be available with Fusion NFS, and most importantly, the protocols will allow access to the same data.

Do you need both SMB and NFS?

No, Fusion SMB or Fusion NFS can be run independently. However, both protocols are often required. Traditionally, only the largest storage vendors offered a true multi-protocol solution. This is where Tuxera Fusion demonstrates its strength.

Fusion SMB and Fusion NFS will work seamlessly together, delivering multi-protocol support for any Linux server wherever deployed. Linux, Windows and macOS clients will be able to connect with the protocol of their choice, and we will manage permissions and locking.

How fast is fast?

A fundamental aspect of NFS performance is the use of RDMA. With faster performance than NFSD over RDMA, or Ganesha over TCP (which does not support RDMA). We can deliver 22.7GB/sec compared to 22.5GB/sec for NFSD and 13.6GB/sec for Ganesha. (1x200GbE port)

Aggregate performance and high availability via scale-out will also be available from day one. When combined with rolling upgrades, this creates a true enterprise NFS solution that provides continuous ultra-high performance to connected systems.

The perfect fit for your industry

When to use Tuxera Fusion NFS

Fusion NFS works best when Linux and HPC clients need kernel-class NFS performance with the scale, uptime and support that open-source servers do not offer.

abstract clouds in blues and reds
Cloud service providers

Choose our highly scalable, low overhead, container-based file server. Increase tenant density, while decreasing compute resources.

Learn more
abstract illustration of data in blues with red
Data platform providers

Unleash the full potential of your platform's capabilities with the world's fastest SMB solution.

Learn more
abstract illustration with media elements in blue and red
Media & entertainment

Handle massive 4K, 8K, and 16K video files across Mac, Windows, and Linux at speeds other solutions can't match.

Learn more
abstract illustration medical solutions red white and blue
Medical & healthcare

Spend less time waiting for progress bars and more time innovating and making breakthroughs.

Learn more
abstract system illustration blues
System integrators

Get the secure, scalable, compatible solution, with the most flexibility, without compromising on capabilities.

Learn more
TUXERA FUSION DOCUMENTATION




RELATED RESOURCES

More resources for inspiration

Why better SMB performance is key to speeding up data transfers

Why better SMB performance is key to speeding up data transfers

lock icon
Learn more
SMB and NFS multi-protocol on Linux

SMB and NFS multi-protocol on Linux

lock icon
Learn more
Fusion File Share by Tuxera failover and recovery in Kubernetes

Fusion File Share by Tuxera failover and recovery in Kubernetes

Learn more
Fusion File Share by Tuxera overview

Fusion File Share by Tuxera overview

Learn more
Improving file server reliability using SMB transparent failover with continuous availability

Improving file server reliability using SMB transparent failover with continuous availability

Learn more
Tuxera Fusion SMB – RDMA explainer

Tuxera Fusion SMB – RDMA explainer

Learn more
Tuxera and IDEATEC partner to connect enterprise data access with AI-driven business execution

Tuxera and IDEATEC partner to connect enterprise data access with AI-driven business execution

Tuxera and IDEATEC have signed a strategic partnership to build a joint Data-to-Action model for enterprise AI. Fusion SMB provides the file data access layer, IDEATEC’s AX iPaaS turns AI…

Four cloud workloads where SMB still wins, and why it matters for your platform

Four cloud workloads where SMB still wins, and why it matters for your platform

Windows and macOS have never stopped relying on SMB, and cloud platforms have not either. Four workloads where SMB support creates a clear opportunity for cloud service providers, and what…

Tuxera Fusion: bringing SMB and NFS together on one platform

Tuxera Fusion: bringing SMB and NFS together on one platform

Most enterprise storage runs on two protocols, SMB and NFS, kept apart for decades because neither knows about the other’s locks or permissions. Tuxera Fusion brings both onto one platform…

What the Fusion SMB benchmarks actually tell you

What the Fusion SMB benchmarks actually tell you

Fusion SMB, Tuxera’s Linux SMB server, read at 46.86 GB/s where Samba, the open-source SMB server for Linux, managed 4.17 GB/s on identical hardware. A short tour of the MLPerf,…

NAB 2026 – What a difference a year makes 

NAB 2026 – What a difference a year makes 

Quieter aisles, sharper conversations. Duncan Beattie on why NAB 2026 was Tuxera’s best show yet — and the performance numbers that made a year-old benchmark look quaint: 10.5 GB/s to…

Your AI bottleneck isn’t compute. It’s the file system

Your AI bottleneck isn’t compute. It’s the file system

When AI platforms underperform in production, most teams reach for more GPUs. But the real bottleneck is often the storage layer ; how data reaches compute, not compute itself. Shared…

Tuxera showcases stunning performance with Fusion SMB and introduces Fusion NFS at NAB Show

Tuxera showcases stunning performance with Fusion SMB and introduces Fusion NFS at NAB Show

Tuxera is showcasing breakthrough file sharing performance at NAB Show, highlighting its Fusion SMB platform and a technology preview of Fusion NFS. With speeds reaching 40 GB/s via Windows SMB…

The hidden layers where broadcast security actually begins 

The hidden layers where broadcast security actually begins 

Modern broadcast security must move beyond perimeter defenses, embedding encrypted workflows, zero trust principles, and resilient transport directly into distributed production infrastructure.

Fusion SMB instead of Windows Server: why? 

Fusion SMB instead of Windows Server: why? 

Ned Pyle compares Fusion SMB, a Linux SMB server, with Windows Server on scale, clustering, performance, and security, using side-by-side tests on the same hardware.

Ocube announced as Tuxera’s official channel partner in Korea

Ocube announced as Tuxera’s official channel partner in Korea

Tuxera, the award-winning global leader in quality-assured file systems and storage management solutions, is expanding its reach in Korea with Ocube taking responsibility for promoting and distributing Tuxera’s product portfolio in the country. Earlier…

Tuxera Fusion SMB eliminates data bottlenecks for Albert Einstein College of Medicine

Tuxera Fusion SMB eliminates data bottlenecks for Albert Einstein College of Medicine

Seamless data access and enhanced security across massive research data infrastructure. Helsinki, Finland [Dec 1, 2025] – Tuxera, a leading provider of quality-assured file systems and networking technologies, announces that…

Tuxera showcases enterprise-grade file sharing for Linux servers at SC25

Tuxera showcases enterprise-grade file sharing for Linux servers at SC25

Tuxera brought Fusion SMB and a technology preview of Fusion NFS to SC25 in St. Louis, while IBM partner Data In Science Technologies showed Fusion SMB running in IBM Storage…

Suggested content for:

Our products

Your mission-critical systems demand uncompromising reliability. Tuxera products mean absolute data integrity. We specialize in file systems, software flash controllers, and secure networking and connectivity solutions. We are the perfect fit for data-intensive, mission-critical workloads. Using Tuxera’s time-proven solutions means that your data is safe and secure – always.

Proven success

Our solutions are trusted by major brands worldwide. When you need reliable, scalable, and lightening-fast data access and transfer across any system or device, Tuxera delivers. Our track record speaks for itself. We’ve been in this business for decades with a clear mission: to be the partner you can trust. Read on to find out more.

Related pages and blog posts
Technical Articles
Datasheets & Specs
Whitepapers