So far, no problems with stability at all. They have a failover system which we haven't used, we haven't needed to use, everything has been fine. But we've only had it for about a year. We do have some stuff deployed down in Mexico that corrodes pretty quickly, so I'm expecting something to fail down there at some point, but we'll see how that goes.

It is very stable. We have no problems with the solution.

We did an update last month.

It is extremely stable, and can expand as per our needs due to its stability. 

I have not had to perform any upgrades after the original installation.

So far I take the solution as stable.

The solution is 100% stable. We haven't experienced any issues or witnessed any bugs or glitches. Overall, it's been great.

We had many issues with the performance and the appliance resource management.