External hard drives do not reach the speed of an SSD, but they are fast enough for backups and media collections and offer a lot of storage space. The fastest and largest test winner among the 3.5-inch hard drives is the WD Black D10 (200 euros) with 8 terabytes. Among the smaller 2.5-inch models, there are two test winners (both cost 110 euros): The Verbatim Store`n`Go 4 Terabyte is slightly faster,...