PLATFORM

SFTP Migration Tool

MigrationFox connects directly to any SFTP server and streams files to a modern cloud destination. Whether you're retiring a legacy FTP box, moving a vendor drop zone into SharePoint, or consolidating multiple SFTP hosts into a single S3 bucket, MigrationFox handles the traversal, authentication, and transfer in one job.

Authentication

MigrationFox supports both of the standard SFTP authentication methods:

• SSH key authentication — paste a PEM-formatted private key (RSA, ECDSA, or Ed25519). Passphrase-protected keys are supported. This is the recommended method for production SFTP servers.
• Password authentication — username and password, suitable for older servers or vendor drop zones that don't support key-based login.

Credentials and private keys are encrypted at rest with AES-256 and are never written to logs or transferred unencrypted over the network.

Recursive Directory Traversal

Point MigrationFox at any remote directory and it will recursively walk every subdirectory, cataloging files, symlinks, and directory entries. The path browser in the UI lets you click through the remote file system interactively before kicking off a job, so you can scope the transfer to exactly the subtree you need.

Scans run with parallel traversal — up to 8 concurrent directory listings — so even large server trees with hundreds of thousands of files are discovered in minutes rather than hours.

Transfer Details

MigrationFox streams files using SFTP read handles with large buffer sizes (32 KB per request) to maximize throughput over high-latency links. Multiple files transfer in parallel per worker, and the tool automatically reconnects and resumes if the SSH session drops mid-transfer.

File modification times are preserved where the destination supports them. File permissions (POSIX mode bits) are logged to the job report for reference but are not mapped to destination ACLs — the two permission models are rarely compatible.

Supported Migration Paths

SFTP to SharePoint

Move vendor drop zones or legacy file transfer hubs into SharePoint document libraries with path sanitization.

SFTP to OneDrive

Consolidate personal SFTP shares into individual OneDrive for Business accounts.

SFTP to Amazon S3

Archive SFTP content to S3 buckets with metadata and folder prefixes preserved.

SFTP to Azure Blob Storage

Retire legacy SFTP servers by pushing their contents directly into Azure Blob containers.

Key Features

• SSH key + password auth — works with any RFC-compliant SFTP server
• Parallel scan — 8 concurrent directory walks for fast discovery
• Streaming transfer — files flow through workers with no local disk staging
• Automatic reconnect — dropped SSH sessions are resumed without operator intervention
• Delta sync — re-run jobs to move only files modified since the last run

Pricing

SFTP migrations are billed at $0.50 per GB transferred. Your account starts with 2 GB free — no credit card required. Discovery scans are always free and unlimited.