An NAS with a built-in hard drive is a personal cloud complete with storage capacity. This makes the network drive ready for use straight out of the box, without having to install NAS hard drives. You can easily connect ready-for-use NAS to your WiFi network and set it up using an app on your smartphone or tablet. On top of that, there are models that can also stream movies and series directly from your network storage to your mobile device, smart TV, or computer. Meanwhile, your NAS backs up your holiday photos and office files. Ready-for-use network drives come in various models, ranging from basic models that only make backups to more extensive versions that also stream your media.