The Opensource Linux NAS software is light Linux Distros but enough power to handle your storage problem.
But if you want to convert your old system into a NAS box without spending hundreds of bucks then here is the solution. The cost of NAS boxes depends on the features such as the amount of storage, RAM, CPU etc. There are lots of companies that offer Software + Hardware NAS boxes which are basically an out-of-box NAS solution, for example, Qnap and Synology are two veteran NAS vendors. A place where people can access and share the data 24×7 through the network. NAS aka Network Attached storage devices help to overcome storage problems and gives your data a centralized place.
