So after some googling I found johnnie blacks post about various formats for cache pool devices, raid0,raid1,jbod, etc
I have a 128gb Ssd that I currently use for docker appdata only.. I transfer data too much/too fast to bother with enabling cache, and having it always be full, and whatever. So I bought a 500gb ssd to supplement and I want to add it to my array, and enable cache.
Do I have to lose the data thats currently on my 128gb? I obviously can back it up (it already is), but maybe was hoping I didnt have to
anyways, is add drive to cache pool, let it format/wipe the new drive (not the old 128gb!!) , and then set the options in both drives to the commands specified by johnnie black, the correct procedure?
thanks folks