Very simple and easy to use and seamlessly integrated with Windows

Every couple of years, when I upgrade my desktop, I recycle the old hardware but keep the old hard drives, typically two/machine. This is my way of ensuring the integrity of old data. In my case, it's my photo library, which contains approximately 200,000 images and counting. I'm only interested in the raw photos in formats that don't change with your operating system. For example, I now need to migrate from Windows 10 to 11 and cannot simply transfer the programs. They must be reinstalled. So, my absolute priority is to have a backup of all my photos. The system is elegantly designed, making it logical to navigate and understand the mechanism of uploading and downloading. It's unbeatable in terms of storage and price.