One day, you’ll gather the grandchildren around you and tell them wondrous tales of life before cloud computing: how you used to put information, photos and music on a floppy disk, a memory card or a USB fob to carry it from one device to another. You’ll tell them how it was called sneakernet because you had to physically move the data. They will look at you funny, pat your hand and continue to take personal cloud storage for granted.

Now, however, you can be forgiven for thinking it is a bit of a marvel. A number of companies store your data free and make it accessible to whatever device you are using, wherever you are, as long as you have Internet connection.

For those using thumb drives and external hard drives, think of cloud storage as just another way to back up data, but on a remote ...