A:AnswerYes you can. It has a M.2 port for NVME. so you can use that to boot and the 1tb for storage. You need to buy the extra ssd but yes you can run a second harddrive if its M.2.
A:AnswerIt can run World of Warcraft although it lacks a dedicated graphics card for the higher end visual settings. We always recommend that you qualify the device with the minimum or preferably recommended specifications of any software or game you wish to use.