Vantec NexStar-3 External 3.5inch SATA&USB2.0 Hard Drive Enclosure (Black) (NEWITEM58149860) Drive Case "reach organism" Questions

315 GB space available but can't add more data I have a NexStar-3 external hard drive and it's worked great for me. However, I reached 150 GB full on it last week and found I couldn't add any more ...