While that might be Apple's "official" solution, there's a major caveat: the Photos app doesn't support storing the Photos library on a networked disk. This for

While that might be Apple's "official" solution, there's a major caveat: the Photos app doesn't support storing the Photos library on a networked disk. This forces you to either fit your entire library on your Mac's internal storage or use a directly connected external disk with no network involved. To overcome this limitation, I developed a MacOS app that creates a full backup of your Photos library. You can safely store this backup on any external storage like a NAS, network drive, internal disk, or external disk. Check it out here: https://ibeni.net https://ibeni.net Compared to the "iCloud Photos Downloader," which scrapes data from iCloud, my app uses the official Apple Photokit APIs to back up your photos. This method is more reliable and efficient.