just brew it! wrote:
No drive is guaranteed not to break. If you have valuable data, you need to keep multiple copies in multiple physical locations.
This. If you have just one copy, there's nothing preventing you from accidentally deleting/overwriting your only copy while you're working someday. There's also no guarantee that if your house/apartment burns down/floods that the copy will still be good.
Keep at least two backups in different locations that are updated on a periodic basis and make sure that they work.
The previous suggestions of friend's house is one possibility. Otherwise, your desk drawer at work, or parents' house (if convenient) would also work.
While doing this, I'd probably recommend encrypting all of those drives, just in case a coworker or cleaning staff decides to grab it (yeah, not likely, but possible), or that friend turns out to not be such a good friend.