Donna, I think it would be a good time to take a hard look at your current situation.
- You are talking about your business. Your data is valuable.
- You have no IT staff.
- You are entirely new to computer networking and servers.
- Your Freenas server sounds like it might be using less than ideal hardware.
- You seem to be running a solo operation right now.
Based on the above, I'm not sure if freenas is for you.
This will be somewhat controversial, but perhaps a good game plan for you is to
1) copy data off the server
and
2) subscribe to a cloud storage or backup provider. Crash plan, onedrive, etc.
There is a monthly cost associated with using such a provider, but it's probably less than hiring a contractor to maintain your server.