The solution is finely stable.

There haven't been many crashes because I'm not running a big database on it. There are specific, small applications running over the software. For an on-prem campus, it has been fine.

We had challenges with stability in the first few months while testing S2D, just as we were migrating production to it. It was frustrating at times, there were learning curves, and when you run your storage over the network, you need to be fully confident in every aspect of your cluster's network configuration. I believe we would have had similar challenges with vSAN or any other storage solution using our network as the host/storage interconnect. After working with it and learning it more, I have much more confidence in the stability of the product, and with Storage Spaces Ready Nodes from vendors (which didn't exist when we bought and built), it is much easier to become confident quickly.

This is a stable solution. You just need to know how to manage it. 

In terms of reliability, it depends on how the customer looks after it. Especially if they are using the Ready Nodes and the Lenovo product they should have no problems with the stability of their solutions. But like anything else, obviously, the admins and the server folks need to be trained on it. I would not take for granted that just because this windows server is easy and that they have familiarity with it already that they do not need training and it will be perfectly easy to use. Like any technology solution, they do need training.  

We have not had any problems with stability.