Definition of backing store in English:
A device for secondary storage of data that typically has greater capacity than the primary store but is slower to access.
- This is set because our filesystem will live entirely in RAM and will not have a backing store of the data on any physical device, like a disk.
- Maybe backing store support is still fully maintained and perhaps we are simply not using it correctly.
- These defaults will be returned if no preference value has been set, or if the backing store is inaccessible.