Tusk is a Mac app that automatically backs up your project folders to multiple locations and tracks where every file lives — even when your drives aren't connected.
If you've ever googled "how to back up your files," you've seen the 3-2-1 backup rule. It's the right rule to follow for video projects on Mac, especially when your footage is impossible to recreate. Three copies of your data, across two different storage types, with one stored offsite. It's everywhere, because it's solid advice. But even in 2026 almost nobody does it properly.
The 3-2-1 Rule Is Easy to Understand, Hard to Maintain
The standard advice sounds simple: keep your files on your Mac, copy them to two external drives, and throw one in the cloud. Done.
The reality, especially for videographers and photographers working with large files, is messier. For long-term storage the cloud is not really an option — it's slow and expensive, which makes no sense if you rarely touch the project anymore. Meaning most creatives just dump their files onto an external drive, edit locally, and then forget about them. That leads to another problem: "Have I already backed this up? On which drive did I store this?" — questions that come up exactly when you're trying to clear local space or a client asks you to revisit photos from a year ago.
On top of that, raw footage is ginormous. Coming home from a shoot usually means you have more than 500GB of data to work with. Manually dragging that to two drives every time you wrap a shoot takes time, focus, and follow-through. And if you modify files later — a re-edit, an updated export, an autosaved Premiere project — you have to remember to sync everything again.
Most people don't. They do it once and get lazy.
TL;DR: Manual backups fail because they rely on you remembering. A project-aware tool like Tusk watches your folders automatically, verifies every transfer with checksums, and tracks backup status across all your drives — even when they're unplugged.
Most Solutions Are Either Lackluster or Highly Manual
When I first came across backup problems for my video projects, I found the solutions lacking. I spent a while looking for something that just worked. Carbon Copy Cloner is powerful but it's a cloning tool — great for duplicating drives, not for managing active projects. Time Machine doesn't back up external drives reliably. rsync works great if you're comfortable in Terminal, which most of us aren't. ChronoSync gives you more control, but you're still manually scheduling runs — not quite "set it and forget it for every file change." Some creatives literally use spreadsheets to track what's backed up where, which is exactly as fragile as it sounds.
What I was looking for: an easy way to initialize a project once and know that from that moment forward, backups are handled.
The Part Nobody Talks About: Knowing What's Actually Backed Up
Even if you're disciplined about copying files, there's a second problem: once your drives are unplugged, you have no idea what's on them.
Six months later, when you need to pull footage from a shoot, you're playing a guessing game — which drive did I put that on? Did I back it up before I deleted the local files? Is the copy on that drive complete?
This is where most backup systems fall apart. They move files, but they don't track them.
How to Actually Set Up 3-2-1 Backup for Video Projects on Mac
The goal is to make it automatic, verified, and visible — so you're not relying on memory or discipline.
Shooting on cards? The 3-2-1 workflow starts even earlier — the moment you get home from a shoot and need footage off your card before anything else. Here's how to set up a solid SD card offload workflow →
Step 1: Define your backup destinations Pick two external drives and one cloud destination (Backblaze, iCloud, or a NAS if you have one). Label them clearly. These are your three locations. If you work with large video files and the cloud isn't realistic, seriously consider storing some drives at a friend's or family's place after a project is done. Break-ins and natural disasters do happen. If all your drives live in the same physical location, you're not fully covered.
Step 2: Set up automatic syncing This is where most people drop the ball. Manual copying doesn't scale. You need something that watches your project folders and syncs automatically whenever files change — including mid-project autosaves.
Step 3: Verify your backups Copying files isn't enough. A corrupted transfer can look identical to a successful one — you'd only find out your backup is broken at exactly the moment you need it. The tool you're using needs to verify each transfer with checksums. BLAKE3 and MD5 both do the job; you don't need to understand how they work, just make sure your tool of choice uses one. That way, you'll always know your files are actually safe, not just present.
Step 4: Track status even when drives are disconnected Your backup system should be able to tell you what's backed up and where, whether your drives are plugged in or not. Otherwise you're back to guessing.
The Easier Way
This is exactly the problem Tusk was built to solve. You point it at your project folder, tell it where to back up, and it handles everything automatically — syncing new and modified files, verifying transfers with BLAKE3 checksums, and keeping a record of where every file lives even when your drives are sitting in a drawer.
Once you wrap a project, you can delete the local files with confidence and just one click, knowing Tusk has a verified backup and can tell you exactly where it is. You can restore it just as easily.
FAQ
It depends on your workflow. For project-based work — video, photo, dev — where you need per-file visibility and automatic sync to multiple destinations, Tusk is purpose-built for it. Carbon Copy Cloner and ChronoSync are solid for scheduled jobs or full drive clones, but they're not designed around the 'I need this folder on three places at all times' use case.
Yes, and it matters more for large files because they're harder to recreate if something goes wrong. The main thing is making sure your backup tool verifies transfers — not just copies them. A 200GB file can appear to copy successfully while containing corrupted data. Tools that use BLAKE3 or MD5 checksums catch that before you find out the hard way.
Time Machine is designed for full system backups, not project-based sync. For automatically syncing specific folders to multiple external drives, you need a tool that watches your folders and pushes changes to all destinations as they happen. Tusk does this — add a project, point it at your destinations, and it runs quietly in the background.