lukasgunar wrote in post #17553729
I used to have one catalog few years back for all my pictures, however it might have some downsides:
1. if your catalog fails and for some reason you don't have a back-up, you are screwed (likelyhood rather low)
2. over some period of time your Lr will get slower, the bigger your catalog gets (likelyhood very high)
3. you might want to quickly move some pics with your Lr settings to other computer, then smaller catalogs are an easier way to go (likelyhood rather low)
possibly there are far more reasons.
So what I do currently, I create new catalog for every new set of pics (obviously downside is that I am losing great capabilities of what was Lr created for - a big database of all your pictures) however I never have a problem with slowness of Lr.
Probably the best combination of both approaches for you would be to create more than one catalog (e.g. by months/quarters/years) so once you run out of space you have no issues at all. Simply you will buy new hard drive and just create new catalog.
Obviously this is just one of the ways how your query can be treated
1. There is a reason LR constantly nags you to make a backup, but unlike Windows updates, it's a good idea to do as the dialog box says.
2. You know how most Adobe applications allow you to set a scratch disk? Move your LR catalog to a different drive, preferably an SSD. Speeds will be super fast.
3. Assuming the catalog is stored on solid state media and your computer is equipped with USB3 or Thunderbolt, it should be reasonably fast to transfer.
Also, never store your images with the catalog, maybe this is something that works for some people, but I would not recommend it. I manually copy images from my memory cards to a new folder that I name with a date and/or project description, which I then "add" to the catalog without moving the files. The raws and catalog backup are stored on external mass media, the main catalog is on a scratch disk, and Lightroom on boot drive; it's the most efficient method in my opinion.