A friend who is in the PC repair and set up business has a VPN located on a network drive, permanently connected to the internet. I assume it is on the same UPS as his modem.

He then uses an encrypted connection (VPN) to it to access his files, emails, and the internet via a browser on it, while away from home & maybe the same internally. He says it is far more secure than any other way to access on phone or tablet (via apps). Being a common interface he only has to remember one system.

My solution to critical files like databases for my various websites is to use the webspace I pay for (unlimited). If anyone wants to dig & access the data it is already there in a far more readable format. They are welcome to my back-end software. If the are clever enough to find it they will still struggle with my spaghetti code.