If you want to store gallons of whiskey in an effective way, then keep it in a French Oak made wooden barrel. In the recent period of time barrels are made not only to store Whiskey but prepare it in such a way that it betters the taste of the whiskey.
These Whisky barrels are varnished from the outside and don’t contain wax, paint, or glue from inside to that of outside. Normally casks of various barrels manufacturing companies are medium charred from inside. Mainly they are used for preparation of aging whiskey to that of old taste liquor as a whole.