Well, but what to do if there are three projects with 12000-14000 pictures for each one?
I'm trying to understand your question. The number of files has little to no bearing. My picture hard drive contains 37,000 picture files. On a 4TB drive, that means my files take up about 1/12 (or .083 if decimals are your thing) of the space on the drive.
Given the number of photos you are talking about, I would create one master folder for each project with sub folders in each one. Give each sub folder a relevant name to make finding the photos you are looking for easier. You can create as many sub folders as you desire. You can even create sub folders in the folders, so it looks like a "tree".
For example, say project one is London. The main folder is named London. Under that folder, you have sub groups for Tower of London, London Aquarium, Westminster Abbey, London Eye, Madam Tussuads, Buckingham Palace and St. Paul's Cathedral.
So when you open your computer file manager, you see this:
Note the arrow next to Buckingham Palace. Click it and you find more sub folders:
Again, note the arrow beside Changing of the Guard. Click for the sub folders under there:
Remember, this is all under ONE project, London. You can make it as complex or simple as you want since you can make as many folders as you wish and name them whatever you want.
