A highly scalable alternative to Samba

Fusion File Share by Tuxera is a high-performance, drop-in replacement for open source Samba and other SMB/CIFS servers. It brings support for Microsoft’s Server Message Block (SMB) protocol to enterprise-grade network attached storage (NAS). Our software is highly scalable with unsurpassed reliability, making it possible to securely share files over a network to many devices at the same time. Fusion has all the security and latest SMB features you need, integrates easily with Windows, while also optimized for Mac clients.

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Why choose Fusion File Share by Tuxera

High-performance, scalable SMB server

With its modular and threaded design, our cutting-edge kernel-space deployment boosts I/O throughput, reduces CPU usage, has a low memory footprint, and enables fast, easy handling of multiple simultaneous connections to shared resources.

Extensive SMB-protocol support

Fusion File Share supports SMB 3.1.1 and previous versions (1.0, 2.0, 2.1). It works reliably with all SMB/CIFS protocols to ensure file-sharing interoperability across any network. We bring you comprehensive feature support including pre-authentication integrity, persistent handles, DFS support, VFS stacking, SMB over RDMA, SMB multichannel, shadow copy, and plenty more.

High availability

Fusion File Share can be deployed in Active-Passive mode over the distributed file-system clients to provide high availability and transparent failover of connections.

Simplified, secure data management

Fusion File Share provides capacity planning and management through quota support, as well as user audit and access log support, plus dynamic configuration of shares – with no re-start required. Furthermore, we offer support for multiple authentication providers, such as Windows AD services (Kerberos), LDAP (Lightweight Directory Access), NTLM, file-based local user and group databases, and more.

Easy integration with Windows environments

With Windows ACL/inheritance support, Fusion File Share integrates seamlessly with Active Directory (authenticate with KDC), while also working in Forest and trusted domains.

Optimized for Mac clients

Through rigorous testing, Fusion File Share ensures smooth performance and interoperability with the latest file access protocols used by Mac clients.

User-friendly configuration UI

Our graphical user interface (GUI) allows you to intuitively configure global and share settings, and options available in Fusion File Share’s config utility. From the UI, you can also start Fusion File Share, dynamically configure it during runtime, read/download logs, and more.

Full service technical support

The largest team of file systems experts – at your service. We offer comprehensive R&D support including integration, testing, benchmarking, reports, and product- and platform-specific optimizations. Plus our engineers are on call to help you every step of the way.


Technical data and resources

RDMA and multichannel support

Persistent handles, transparent failover, continuous availability

Scale-out awareness

Distributed file system support

Volume Shadow Copy Service (VSS) support

Windows Active Directory Integration (join/authenticate Windows AD as domain member)

Log/audit support


Verifying Fusion File Share (formerly Tuxera SMB) server’s automatic connection failover and recovery with Kubernetes

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An SMB server made for both user space and kernel space – is it possible?

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Built on strong partnerships

Since 2009, we’ve been a close partner with Microsoft in file systems and storage. We’re also Microsoft’s official partner in bringing full SMB support to all non-Windows platforms. What's more, Fusion File Share developed from our experience and cooperation with our partners in network storage.






When to use Fusion File Share by Tuxera

Use Fusion File Share when you need maximum I/O throughput from an SMB solution, with low CPU usage. Our non-GPL replacement for Samba and other SMB/CIFS servers supports all the SMB protocol’s latest features, including SMB 2, SMB 3, and all related security features.


Cloud service providers

Network storage

Backup and recovery

Get Fusion File Share by Tuxera

For software evaluations and pricing quotes for our SMB server implementation, get in touch with us.

Contact us for pricing