How to transfer large files fast over WAN with Valurian

Transferring large files across global offices is often frustratingly slow, especially with traditional WAN setups using FTP or SFTP. Congestion, latency, and packet loss limit performance, even on high-speed networks. Valurian solves this by enabling ultra-fast file transfers built for modern distributed operations, with no tuning required and no cloud dependencies. Here is how we outperform legacy protocols and tools like Resilio and Aspera, and why leading enterprises choose us for high-speed, multi-site file distribution.

Legacy tools weren’t built for today’s WANs

Modern distributed operations demand more than what yesterday’s protocols can deliver. Yet many teams still rely on outdated tools like FTP, SFTP, or even “modern” solutions like Resilio that simply weren’t designed for high-latency, multi-site environments.

Let’s break it down:

  • FTP
    Fast in 1985. Not now. FTP is single-threaded, lacks encryption by default, and collapses under large file loads or unreliable links.
  • SFTP
    You get encryption, but at a cost: performance. SFTP adds overhead, introduces bottlenecks, and doesn’t scale across geographies.
  • Resilio
    It brought peer-to-peer to the table but WAN latency and packet loss still cripple throughput. Plus, it requires setup and maintenance overhead most teams don’t want.
  • Aspera
    Fast? Yes. Affordable and flexible? No. Aspera’s high-speed tech is powerful, but deeply proprietary, expensive, and dependent on IBM’s ecosystem.
Feature / Tool FTP SFTP Resilio Aspera Valurian
Encryption
Speed over WAN ⚠️
Parallel transfers
Latency resilience ⚠️
Self-hosted ⚠️
License flexibility ⚠️
Offline capability

WAN acceleration with Valurian but without the headaches

Legacy protocols buckle under modern WAN conditions. Latency, jitter, and congestion all take their toll. Valurian eliminates those bottlenecks with a purpose-built engine that treats wide-area networks as they are, not as we wish they were.

Here’s how:

  • Multipath parallel transfer over UDP
    Valurian breaks large files into secure chunks and streams them simultaneously over multiple paths — saturating available bandwidth without delay or TCP drag.
  • Intelligent chunking & compression
    Adaptive chunk sizing and lightweight compression dramatically reduce transfer times, especially for large or redundant datasets.
  • Retry-resilient protocol for poor connections
    Unlike TCP-based tools, Valurian handles dropped packets and unstable links gracefully without retransmit storms, or frozen sessions.
  • Secure, encrypted streams
    Every packet is encrypted in transit with modern cryptography, ensuring data integrity and confidentiality without slowing down performance.
  • No hardware or tunneling required
    Valurian runs on your existing infrastructure wihtout WAN accelerators, VPNs, or proprietary appliances.

"Transfer speeds up to 8x faster than SFTP over a 200ms latency WAN connection."

What customers ask before switching from FTP, Resilio, or Aspera to Valurian

How does Valurian differ from Aspera or Resilio?

Valurian delivers comparable or better speed than Aspera or Resilio but without vendor lock-in, costly licensing, or cloud reliance.

✅ No proprietary architecture.
✅ Fully self-hosted.
✅ Works in online, offline, or sovereign networks.

What file sizes can Valurian handle?

Valurian was built to move serious data. Whether it's 10GB or 10TB, we’ve handled it reliably and fast.

We've transferred multi-terabyte media archives across high-latency networks without failure.

Do I need to change my firewall or network setup?

No. Valurian is protocol-agnostic and uses standard ports. You can deploy it without opening tunnels, installing VPNs, or touching your firewall.

Secure by design.
Minimal network friction.

Still have technical questions?  Browse our full FAQ