It's been quite a while since I last spoke with the folks from DataCore. I believe that the last post on this company was back in August 2008 (see Datacore - nothing but storage.) Last time the discussion focused on the need organizations should recognize to pair virtual storage solutions with their virtual processing solutions. This time, the discussion focused on DataCore's Advanced Site Recovery (ASR) and preparing for disasters and increasing availability without also increasing costs dramatically.
Some approaches to high availability and disaster recovery require that an organization maintain a separate datacenter, DataCore's approach is to utilize excess capacity in current datacenters. This approach is likely to be appealing to small to medium sized organizations that don't have the luxury of maintaining a separate datacenter for disaster recovery.
Since the discussion focused on organizational requirements and what DataCore's products do to address them, we really didn't discuss how quickly a failure or disaster can be addressed. We also didn't focus on the many competitors and different approaches that offer similar results DataCore faces in today's marketplace.
DataCore has a very strong list of partners, a large list of satisfied customers and can most certainly make the point that their approach is useful and efficient.