What do you like best?
Most backup products excel at capturing your data and holding on to it for a set period of time. They might even be good at recovering flat files, emails or databases. But no other product I have found protects your entire environment as well as Quorum does. It was designed from the ground up to create a runnable VM of every machine it protects.
Other products claim this capability, but they simply were not designed to do this. If you compare the technical specs (CPU, RAM, Disk) of other products against Quorum you will clearly see that while they have the disk capacity to ingest your data, they don't have enough "horsepower" to spread around to run more than 2 or 3 systems. In fact, when shopping for those systems, they sell them by disk capacity. Quorum on the other hand, takes disk into account, but also sizes the appliance based on RAM and CPU needs as well.
The appliance is well designed, well supported and it works exactly as advertised
What do you dislike?
The UI is a little simplistic for me personally. I'm a data junkie so I like knowing as much as possible about whats going on. The data itself is there and accessible, but not as accessible as I'd like.
It was initially very hard to believe it performed as advertised. Overcoming this skepticism was a major challenge for us, but in the end their claims were validated
Recommendations to others considering the product
It might be hard to swallow the marketing, but I can assure you it's the real deal. Unitrends in particular claims to have "instant recovery", but that is a feature tacked on to their backup appliance, not it's core focus (as in Quorum).
As I said before, compare the tech specs of comparably priced Unitrends and OnQ appliances and you'll be able to see the focus of each product. Storage for Unitrends, Storage, CPU and RAM for Quorum.
What business problems are you solving with the product? What benefits have you realized?
Prior to Quorum, we would have struggled to recover one server. Now, after 4 full scale DR tests, we can recover our entire operation (30 servers) in 90 minutes (or less if we really had to). Our servers and data are fully protected, and we are confident we can run our network should our primary site go down.