How to use an unsupported NAS or a spare Mac on your network as storage for Time Machine backups

The end the AirPort product line could cause some issues in the future, when users want to back up their Mac’s data using Time Machine but find their Apple network appliance has died completely, with no immediate replacement available. Here’s how to set Time Machine to use a NAS or another Mac’s storage elsewhere on a home network.

Source:: Apple Insider