Perhaps the following statements (shown at bottom of this comment) were written in haste but there are a couple of issues regarding the HDS flash announcement;
1) 4x sustained throughput@500MB/Sec x 4 = 2.0GB/sec, not 2TB/sec.
2) An SSD is a storage device, not a controller, so a direct comparison is spurious.
3) Throughput in itself is a poor metric for characterizing flash performance; IOPS would be more useful.
4) 1 Million x 8KB IOPS with a flash-based VSP is not that impressive when compared with the number of IOPS that can be supported by much smaller and considerably less expensive subsystems that are already commercially available and installed today.
In particular HDS says the controller will have:
4 x sustained throughput of current MLC flash SSDs;
With good MLC SSDs offering 550MB/sec and 500MB/sec for sustained read and write operations, the HDS controller should have a 2.2TB/sec and 2TB/sec sustained read and write bandwidth level.