A Lightroom Classic catalog is a single database file that holds your edits, keywords and collections, so it needs its own backup routine separate from your photos. Schedule automatic catalog backups, store them on a different drive, and keep the working catalog on a fast local disk. Most corruption comes from drive trouble, interrupted saves or network storage.
What the Catalog Backup Actually Covers
The catalog backup copies the .lrcat file, which stores metadata and edit instructions. It does not copy your original photos or the thumbnail caches. You need a second system for the image files themselves, such as a copy on another drive or a cloud sync of the photo folders.
- Catalog: edits, flags, keywords, collections.
- Thumbnail caches: can be rebuilt, so they are not essential to back up.
- Originals: raw and JPEG files, which must be backed up separately.
Set Up Automatic Backups
- Open Lightroom Classic and go to the catalog settings in the preferences menu.
- Find the option for backing up the catalog and choose how often, such as every time Lightroom exits or once a week.
- When the backup dialog appears at exit, choose a destination folder on a different physical drive from the working catalog.
- Tick the options to test the catalog integrity and optimize it during backup. This adds a minute or two but can catch problems early.
- Do not skip the dialog for long periods. Skipped backups leave you with old copies only.
Keep Old Backups, but Not All of Them
Each backup creates a dated folder. Keep several recent versions, since a problem may go unnoticed for days, then delete the oldest from time to time. Copying the backup folder to cloud storage or a second drive adds another layer of protection.
| Item | Suggested habit |
|---|---|
| Working catalog | Internal or fast local external drive |
| Catalog backups | Different drive, plus an extra copy elsewhere |
| Originals | Two copies on separate drives or one local and one cloud |
| Old backup folders | Keep a handful of recent ones and prune the rest |
Habits That Lower the Risk of Corruption
- Keep the working catalog on a local drive, not on a network share or a shared cloud folder.
- Do not open the same catalog on two computers at once.
- Quit Lightroom normally instead of forcing it closed, and avoid shutting down the computer during a save.
- Leave free space on the drive that holds the catalog.
- Replace aging drives before they fail, and eject external drives properly.
- Update Lightroom and your system software on a regular schedule.
If Lightroom reports that the catalog cannot be opened, restore the newest backup. Copy the backup out of its folder, rename it clearly, and open it from a new location instead of overwriting the damaged file, so you keep the original for later inspection.
FAQ
Can I store the catalog on a cloud-synced folder?
It is usually discouraged because sync tools can touch the file while Lightroom is writing to it. Keep the working catalog local and sync only the finished backup copies.
How often should I back up?
Match it to how much work you can afford to redo. Many people back up on every exit while editing heavily and weekly otherwise.
The Short Version
Back up the catalog on a schedule to a different drive, keep several dated copies, and protect your original photos separately. Keep the live catalog on a local drive, close Lightroom cleanly, and restore from the newest backup if something goes wrong.
