If you add a new storage tier which is supposed to be cheaper than another tier but also slower, you can't take it for granted that real life performance is bet

If you add a new storage tier which is supposed to be cheaper than another tier but also slower, you can't take it for granted that real life performance is better. For Facebook which has talent on hand and a very large scale to amortized R&D efforts it is one thing. But for the rest of the market it is a very different. But you said the positioning is scary, seemingly because of the additional work that's needed to make it work. If it's shared, does that not help?