Supporting caching on multiple libraries

> I'm playing about with a wandboard and currently have it connected to my
> WHS shared music drive. I also have a need to take it to another
> location with the library on a different portable hard drive. I know I
> can just change the music directory to use the different source but my
> question is this: When I change the music directory is the cache from
> the other music directory lost/overwritten, or are both music directory
> caches kept? I am trying to avoid rescanning when changing music
> directory, is this possible?

Yeah, caches get wiped/replaced. But with the WB it should be easy enough:
before moving, clone your SD card with the system on it, swap SD cards
when swapping collection?

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Michael