Many of us have more data than we know what to do with. Digital photos, digital movies, MP3s and old school stuff like documents and spreadsheets can start to take up a lot of space on your PC. On your smartphone or tablet, it’s even worse —a lot of those photos get snapped on a smartphone and with limited storage, it doesn’t take long to fill them up. Cloud storage is always an option, but then you’re at the mercy of the provider and there may be charges associated with the service. Western Digital offers a compelling alternative —a “personal cloud”— with its My Cloud series of network hard drives. I tested a 3TB My Cloud drive and came away convinced that this is the best thing to happen to hard drives since USB.