![Quote](images/misc/quote_icon.png)
Originally Posted by
GrumpyDiver
Gary - I don't want to put words into Colin's mouth, but I believe what he is saying is that all of the edit information done in Lightroom is stored in a database, and unless you back things up, you are at risk of losing all of your edits. It sounds like your workroom makes sense, but not everyone will be doing the backups. If your database goes, you have lost 100% of your edits.
In ACR, metadata from adjustments of the RAW files are saved to a sidecar file (*.xmp) associated with every image, so short of a catastrophic failure of a hard drive (and I do back up my images to an RAID device, just in case that happens), the amount of data loss is minimal. The execption is DNG files, where the file's metatdata is part of that format's data structure. The original image is not touched.