Using NFS to provide extra disk to a Raspberry PI

As the Raspberry PI uses an SD Card for it’s boot device there are times when you need either more space than is available on that device or a device that’s faster – writing to flash is slow and flash cards do have a limited number of writes that can be made to them.

Now there’s several ways to accomplish this:

  • Use an external USB drive (the common route)
  • Use a network shared drive

Using a USB drive is simple and is the faster option but it means it’s dedicated to the PI whilst it’s in use, hence this article on using a network drive – in this instance a directory on another Linux box in the network.

Also having it shared on the network means that multiple machines could use it at the same time. Imagine if you are a teacher with a collection of PI’s being used by your students. You could setup a central read-only directory with your class work which they can all access as if it’s installed locally.
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