DriveWarden

A disk-to-disk and cloud backup tool for Windows, built around one promise: a backup should never put your data at risk.

DriveWarden shows you exactly what will change before it touches a file, and the safeguards that protect you from a bad run are on from the moment you install — not buried options you have to know to find. Every file is written under a temporary name and swapped into place only when it's complete, so a crash, a yanked drive or a dropped connection can never leave you with a half-written file.

Nothing is hard-deleted by default: a replaced or removed file is moved into a dated history you can roll back to. And if a source folder suddenly looks empty — a disconnected drive, an over-broad filter — DriveWarden refuses to mirror the “deletion” rather than wiping your backup with it.

Free 30-day trial · buy once, no subscription

Why it's safe

• Crash-safe copies — write-and-swap means an interruption never corrupts a file.
• Recoverable history — replaced files are kept in a dated folder, not overwritten.
• Won't wipe a backup — an empty-looking source is refused, not mirrored.
• Ransomware tripwire — pauses a mass-encryption-looking run before it writes.
• Conflicts keep both — two-way sync preserves both edits, with a side-by-side text merge.
• Prove-it tools — drive SMART health check, restore-readiness test, bit-rot scrubbing, and a tamper-evident signed history.

What it does

• Scan, then back up — preview every change before it happens.
• One-way or two-way — mirror a folder, or keep two in step both directions.
• Cloud & remote — SFTP, WebDAV and S3-compatible storage, or any NAS / network share.
• AES-256 at rest — with an optional full-privacy mode that also hides names, sizes and dates.
• Copy a whole drive — safety-checked, resumable, pause any time.
• Runs by itself — an optional background agent handles scheduled and change-triggered backups. Power- and temperature-aware.
• Built for scale — 24 TB and 10 million files, gentle on spinning disks.
• Private by design — no account, no ads, no tracking.

Screenshots