The that sits in a drawer is not protecting your data. If you don’t connect it to your computer and confirm that Time Machine has completed its backup, you have NO backups. And, when your computer hard drive fails or your laptop is stolen, the drive in the drawer will be of no help in recovering precious files.
Time Machine, iCloud, Dropbox, and more ways to backup your data
When is a backup drive not a backup drive?
If you answered “Why, Mr. oic TechCare blog author, that is clearly a Seagate Backup Plus Slim Portable External Hard Drive with USB 3.0,” you are correct, technically. Depending on how you use it, it may not be a backup drive at all. The following definition explains why.