Thousands of free programs some of which are better than the programs you pay for. I have a plan to convert a business to Linux and save the company Hundreds of dollars. Linux is here to stay and you have the option to pay for support even though there is plenty of free support. Use your current hardware and have it running better than it ever has been.
Visit my site on Facebook or my website and look for the list of programs some of which you can download on Windows to try such as LibreOffice which completely replaces Microsoft Office and saves in MS Office format so you can still share your documents with the Windows Users you know.
You can have Network Shares, Network Printers, Scanners, Labelers, phones, a file server, database server, web server and much more. Just tell me what you want to do, and I will set it up for you. I do have to say there will be a learning curve for a about a month.
A Linux Backup Solution can utilize a server or be implemented on each node, all free except for the hardware like external hard drives/tapes, file server, database server, or any kind of server. One piece of hardware which I will call the server can serve up many things like files, web pages, database, etc.