PLATFORM

SMB / File Server Migration Tool

MigrationFox migrates Windows file shares and SMB-accessible NAS devices directly to the cloud using a lightweight Windows agent. No staging server, no Robocopy scripts, no PowerShell — install the agent on any Windows machine inside your network and stream shares directly to SharePoint, OneDrive, or Google Drive.

The MigrationFox Windows Agent

Because SMB shares live behind the firewall, MigrationFox can't reach them from our cloud workers. Instead, we ship a small Windows agent (a standalone .exe, no installer) that you run on a server or workstation with network access to the file shares you want to migrate.

The agent registers with your MigrationFox tenant using a one-time token, then sits idle waiting for jobs. When you start a transfer from the web UI, the agent receives the job, reads from the SMB share using the credentials you provide, and streams the files directly to the destination cloud API — the data never round-trips through MigrationFox servers.

One agent can handle multiple shares and multiple concurrent jobs. For very large migrations you can install the agent on several machines and MigrationFox will distribute work across them.

Authentication

SMB shares are accessed using NTLM authentication. Provide the username (optionally with a domain prefix, e.g. CONTOSO\\svcmigration) and password when you configure the source. The agent caches credentials in memory only — they are never written to the local disk.

For domain-joined servers you can also run the agent under a service account that already has read access to the shares, in which case no explicit credentials are needed in the job configuration.

Direct Upload to Cloud

The agent reads files from the UNC path (e.g. \\\\fileserver01\\finance) and streams them straight to the destination cloud using the same parallel, chunked transfer engine used by the cloud-to-cloud workers. There's no intermediate staging on the agent machine — memory usage stays flat even when transferring multi-terabyte shares.

Supported Migration Paths

SMB to SharePoint

The most common file server retirement path. Top-level share folders become SharePoint document libraries, subfolders are preserved, and path lengths are sanitized to fit SharePoint's 400-character limit.

SMB to OneDrive

Migrate home-drive shares (e.g. \\\\server\\users\\jsmith) directly into each user's OneDrive for Business during an M365 rollout.

SMB to Google Drive

Move file server content to Google Shared Drives with folder structure preserved.

Key Features

• Lightweight Windows agent — single .exe, no installer, no reboot required
• Direct cloud upload — data streams from the share straight to the destination API
• NTLM authentication — works with any Windows or Samba-compatible file share
• Parallel transfer — 8 concurrent file uploads per agent
• Delta sync — re-run jobs to move only files modified since the last run, ideal for cutover weekends

Pricing

SMB / file server migrations are billed at $0.50 per GB transferred. Your account starts with 2 GB free — no credit card required. The Windows agent and discovery scans are always free and unlimited.