We used Dell Compellent as our storage previously.

We do use multiple brands depending on client needs so our situation is not so much that we switch or adopt something and leave something else behind as the client might. From brand to brand there are differences and advantages.  

The Dell product focuses on this thing called Ready Nodes. They are not really very prescriptive about what models of drive or caching devices that you should use with it, which is very good. But at the same time not very flexible because the product is so prescriptive in other ways. This makes decisions easier but limits some opportunities.  

HP is very, very flexible. But maybe they need to be a bit more prescriptive. Sometimes if customers have too many choices, they have more probability of making the wrong decision and they end up buying the wrong solutions or solutions that are not optimal for their situation.  

Lenovo has something that is really the equivalent to Ready Nodes. So from that perspective, you can say that Dell and Lenovo have probably the easiest way of helping users make choices when buying the solution.  

We have used and implemented many different storage solutions, depending on the client.

For example, for smaller implementations, we have used iSCSI. It is much cheaper, is easier to manage, and has fewer points where problems can occur.

Another example is that we use Cisco HyperFlex for some clients.