I use windows to store photos now. Can I upload to iCloud Drive and keep my current file integrity?

[iMore Question]

I have thousands of pictures stored on a remote drive. If I subscribe to iCloud and upload them, will it retain the file structure?

 

[BlackNightmare]

If you turn on iCloud Drive sync with your Pc or iPhone, your photos are uploaded in full quality online, while you can choose to retain on your devices a full copy or an optimized storage quality (lower quality) for storage saving purpose.