I'm curious what the performance characteristics will look like. Will they behave more like SMR where they don't work very well in RAID or ZFS due to needing to wipe large portions at a time, or will they be more like CMR where you can reliably do a sector at a time. I really hope it's more like CMR because otherwise the storage just won't really cut it at sizes as small as 50TB by then. With Flash disks being available (though at insane prices) at 100TB right now I'm not convinced there's going to be much of a market with the price/storage and performance stagnation that's been going on.

https://nimbusdata.com/products/exadrive/pricing/ # for the 50-100TB disks, low volumes but available now if you have no budget limits.