But even so, you need a larger drive for backups than whatever is in your PC. Incremental backups-which is how all good backup software works-save disk space by backing up only the files that have changed since the last backup. Get the largest backup drive you can afford. These slower drives are cheaper, and since the backup software runs in the background, you probably won't notice the slower speed. One nice thing about buying a drive for backing up your data is that you don't need to worry about drive speed. If you don't mind a larger form factor, there's a Western Digital 6-terabyte 'desktop' version that's not much more ( $141 at Amazon, $155 at Walmart). I like this 4-terabyte model ( $90 at Amazon, $95 at Target), which will back up this very article later tonight (it's backed up to the cloud as I type, more on that in a minute). Several of us here on the Gear team have had good luck with Western Digital hard drives.
Even within brand names, though, some drives are better than others.
