The drive I'm using is really too small to be a cache drive, I think. That, and it's only 5400 rpm, I think as well.
I want the app drive strictly to hold settings for my apps, e.g. my MineOS installed Minecraft server, so that it doesn't lose settings between boots.
I didn't want to use a 120gb cache drive as it isn't enough for my daily transfer right now while I'm getting everything setup (multiple Mac Time Machines, some other backups, media files, etc.) which are pushing well past 120gb per day, double or so, really. Wouldn't I want a large SSD for cache?
I've read comments in lots of threads about using Unassigned Devices to mount a separate drive from the array to use as appdata, but none that I can find telling me how to do it.
Is this not a good way to use this little spare drive?