If you are transferring an extensive Photos library, it can take some time. Available in sizes up to 4TB, these drives are super-fast, reliable, rugged and portable – perfect for your camera bag. I use and would recommend an external Solid State Drive (SSD) such as the SanDisk Extreme Portable SSD. It is considered good practice to keep large media type files on something other than your system drive. Mac OS creates the library the first time you open Photos on your machine. Photos Library is the folder where the Photos App stores the images you import, either directly from a camera or device or your iCloud photo library.
