Sta.sh is your very own upload and publishing platform within deviantART.
Everything that you add will be provided a special URL, that is only known to you. That means that others are only able to see the content you are willing to share with them. It can be a specific file or a whole stack of different ones.
With a free membership you will have a limit of 2 GB, while Premium Members can store files up to 10 GB. Once you have reached the limit you can't upload more. You first need to delete or to publish existing files.
How to get to Sta.sh
To enter Sta.sh you can either just type that into your browser or make use of the dA menu.
You will find it in the menu, under the "Deviant" section, when hovering over the little arrow next to the dA logo but also when you use the "Submit" menu.
By clicking one of those, or typing it directly, you