I have just set up my new ASUS Router and am looking for a suitable Hard Drive or NAS to accompany it. I currently have a 500MB Seagate Freeagent connected via the USB which seems to do the job I want it to do (ie be accesed from tablet & Laptop). However, I wish to increase the size of this drive to 1 - 2TB. Ideally I would like to use a USB powered device, just to save on cables etc. But I am concious of whether such drives are designed to run 24/7? What would be the difference in a NAS Drive? Any advice appreciated.