Intel Optane shipping!!!
Intel's first hyper-fast 3D drive is meant for servers
You can get the drive right now if you're part of Intel's early shipping program, and there are promises of larger capacities (750GB and 1.5TB) and U.2 form factors coming later in 2017.
Intel Introduces the World’s Most Responsive Data Center Solid State Drive
Today, Intel unveiled the Intel Optane SSD DC P4800X Series and Intel Optane SSD DC P4800X Series with Intel Memory Drive Technology, enabling new possibilities to transform storage and memory architectures for the data center.
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Eventually it will probably be cheap enough to have just that kind of storage but on the way there, a tiered approach of varying performance storage will give much the same experience for a much lower cost. Rather than having 1-2TB at $4-8k, it would be $500-1000 SSD coupled with a fast 32GB+ cache. In cases where people deal with 100-200GB at a time the $4-8k drive would show a benefit but this would be rare even in high-end workflows. This kind of storage in high capacities is meant for servers where they are constantly hitting the storage for small files and chunks of data from databases to serve up to thousands/millions of people at the same time.