Other contributors have said "What are the advantage of network attacheed storage?" is the same question as "What are the advantages of network attached storage?" If you believe that these are not asking the same thing and should be answered differently, click here
What are the advantages of network attached storage?
It's a central location to store data. You can set it up in a RAID for redundancy so if a hard drive fails you don't lose the data. It's also easier to share files and data with other users who might need it.
network attached storage or abbreviated NAS is a network storage device which consists of a network interface card with MAC address just like any other devices like network printer, Router, Switch or...
It can go wherever you want it to go in theory, they are big bulky blocks of hard drives. They are usually kept in server rooms connected by fiber optic cables.