With the cost it is not knowable
If they won't say what their 15TB of Fusion_IO will cost how can we answer this? Also, how many CPUs and how much memorywill it take to manage 15TB of Fusion-IO cards? I know we (TMS) can provide 20TB of flash in a high availability configuration for around $320K street price. That would include all the needed CPU and memory to manage all the cards, the enclosure and needed FC/IB interfaces.