Lightroom Preview Files

To avoid unnecessary use of your bandwidth, Backblaze Computer Backup does not back up Adobe Lightroom's preview files. The purpose of these .lrdata files is to speed up the process of loading and viewing Lightroom photos. They do not contain any unique user data. As such, these files are excluded from your backup to save bandwidth and space. If you need to restore your Lightroom files, the .lrdata files are automatically recreated from the other Lightroom .lrcat files.