Our usage of Cisco UCS Manager is minimal. We're just using it as a telephony system. Cisco tends to over complicate all of their solutions. Cisco UCS Manager is not that flexible. Cisco technologies are always cumbersome, and you need a specialist's skills to use their products. That's why we used an integrator to deploy it and couldn't do anything in-house. So, from that perspective, it limits flexibility. Cisco UCS Manager virtually needs no maintenance. Since it's being deployed, it's pretty robust, which is typical for Cisco. If you implement it correctly, it is stable and resilient. Before opting for Cisco UCS Manager, do your evaluation upfront properly, and make sure you understand your use case. Also, look at alternatives from the perspective of support and the complexity of deployment. Those were the key areas we probably didn't look at, and as the project went on, we discovered the pitfalls. Overall, I rate Cisco UCS Manager a seven or eight out of ten.