A safe bet...
...to say we can ignore Nexsan...
Have we witnessed the end of an era? Has the great storage company growth boom ended with a series of big bang acquisitions: 3PAR, Archivas, Compellent, Data Domain, Diligent, EqualLogic, Isilon, LeftHand Networks, Ocarina, Storwize and more? Over the last five years a whole swathe of up-and-coming storage companies has been …
We certainly haven't witnessed the end of an era, just another (albeit large) round of consolidation within the marketplace.
There are 20+ new storage start-ups that are up and coming, such: -
VirtualSharp Software - Disaster Recovery Assurance (for virtual/physical environments)
Virsto - Storage I/O optimization (for Hyper-V environments)
Evostor - Storage virtualization (for VMware environments)
etc.