More security, more features, and easier to expand your 'home lab' -- not to mention how much you can learn about networking.
Building a NAS is one such project, and with enough external drives, you can have a reliable file-sharing and backup server ...
how much will it cost to build a server for a business? How much does it cost to set up a server on your own? You should typically plan on spending between $1000 and $2500 on enterprise-grade hardware ...