I have never lost that many to storage, but if they all came through okay I would be in big trouble. I figure, after this year, that my maximum is about 180 plants in 3-5" pots with several in larger pots (12-18"). If all I did was dahlias I could handle it though I get so discouraged as I see the spindly ones. I have started to 'cull the herd' by dumping non performing or super spindly, despite pinching the centers) plants to examine the roots and tuber. Sometimes it means they are just living off the tuber and will never amount to anything. So better to pitch now. But I also have those two rolling racks, four shelves each with four flourcent lamps each that grow vegies and annuals. And many of those are still in 6-paks and need replanting outdoors. I have already repotted many to 2" pots as they are outgrowing the 6-paks. I have made room on the 2 4x8' tables for overflow by moving two lots of dahlias outdoors to harden off. They are done, so now to move out the final batch.
I am sure I will give in this fall to storing again, but this time I will only keep so many of each tuber I like. Ice Berg, White Fawn, Karma Martin Swan outdid themselves with tubers and many many survived winter and I dutifully potted them all up as they sprouted. Never again. Only those with sprouts and only 3 at the most of each kind I want. Maybe even just 1 if it is healthy enough to give one nice plant. If I am going to flat out pitch some plants or tubers that actually look good, I will post on my list here for anyone who wants them for postage. Preference to people I know of course.
I think I will take an actual inventory as of today, and do a bit more culling. Those I have pitched thus far in the last week had really good tubers but not much in the way of roots. Not sure why. Other than the huge mess when I over watered and repotted. I know I did a lot of damage to feeder roots then.