Not an expert but I usually stored my tubers in a cool dry place. Last season I overwintered a few as houseplants. I stored 7 dry tubers and 4 in their pots that never went completely dormant. I did not lose any plants that were kept in their pots, but lost 2 that I stored dry. One of those lost was my favorite, Dragonheart.
This year I am storing my favorites in pots and the ones I am less enamored of dry.