I've been looking at the SMART data on the 330 and it does not look to be 3K NAND. (it could still be though)

From what I can see, Raw NAND writes points to MWI exhaustion at about 5K which means ~590TiB of NAND writes and 835TiB of Host writes.
(based on the first 5 MWI movements, the next few days will tell whether it sticks, I'm recording every 10 minutes so the change is not immediately recorded)