3.84 SSD
that is a Sandisk SSD, as of June announcement at least, HP may be multi sourcing now. But I am 100% certain 3.84 launched as sandisk.
HP has replaced its 7000 series 3PAR StoreServ array with a gen-5 ASIC-based StoreServ 8000, starting at $19,000. It's also added a top-end 20800 starter config, a lower-cost 20000 all-flash product, and enhanced its StoreServ OS. The new all-flash array (AFA) products will increase the competitive heat on IBM, EMC, Pure …
specifically it is this 4TB SSD
http://www.sandisk.com/enterprise/sas-ssd/optimus-max-ssd/
which with adaptive sparing allows 3PAR to get up to 3.84TB of space and use it for transactional workloads. Without adaptive sparing on transactional workloads Sandisk the capacity would drop to 3.2TB.
Not quite, lots of new SW features also if you do the digging but they're just never top of mind when reporting on new hardware launches. 3.2 Million IOps is still pretty impressive no matter how you look at it, even if they only get ~60% of that they're touching 2 million IOps at sub ms latency with a very low cost per GB.
The two to eight controller clustering should really be seen as a plus, no need to buy multiples, simplified management, data mobility, extreme scaling and high availability vs the rest of the two controller crowd. Even if you look at the scale out solutions out there they simply don't have the same level of maturity, features or availability.
Looking forward to getting my hands on our pair of 20850s in a few months.
Also for reference, after having lengthy discussions with some of the engineers close to the 3PAR product out of the USoA, at least for the Gen-4 ASICs, they are not geared for 4K work loads, but will do their 'best' to give you good results at it, they are geared for larger block size work loads. e.g. MS SQL recommends a 64K block size.