“When considering a portable drive, there are a few things to keep in mind,” Albert Filice writes for Macworld.
“First portable drives rarely ever have data redundancy, so don’t use them to store sensitive or irreplacable information, or at least make sure the data on the portable drive is backed up,” Filice writes. “Consider your use: if you’re backing up your Mac on the go you don’t need super speed, but if you’re going to be working directly off the drive you might want to sacrafice speed for capacity. And, of course, there’s also price to consider.”
Much more, including why Macworld’s top choice is the Seagate Backup Plus Fast (4TB), in the full article here.