I need to pick a hard drive but I'm a little unsure as to what they actually are. I thought it was the thing that reads your disks basically but does it also hold the memory for all of your saves and stuff? Also do the Solid State Drives read disks and store memory because nobody has mention them reading disks as they all say that it just doesn't move and if it didn't read disks then I would also have to get a hard drive anyway. Confused, please help decide what I should buy for the new PC I'm building.