Users having 64GB or 32GB don’t need to worry much about the storage issue. But users of 16GB always have to see the data usage, because in later stage when the usage is nearing 16GB where you can’t download any more apps or videos.
So always keep an eye on the data usage and the available space of your iPad. Here is the way how to check the available space and used space.
Go to Settings -> select General -> Usage. On the top this will first show you how much space is available and next to that you can see how much space is used.
In the below screen shot it says – 9.3 GB Available and 4.4 GB Used. Underneath you can see the split up of the storage that is being used by the apps that is installed on your iPad.