So, you've built your data center, put in redundant power feeds, and loaded it with systems and storage? What could possibly go wrong from a power and cooling perspective? I've spoken with customers and some of our internal HP engineers, and they've regularly seen a common problem that prevents redundant power set ups from providing system level protection - a big problem, especially for mission critical systems.
One challenge that comes to mind is that you lose one of the redundant power feeds. No problem - that is why you have redundant power, right? But, how many of your racks in the data center are wired incorrectly so that they have 2 power feeds from the same power source. This often means that the rack beside it also has two power feeds, but both of them are from the other power source. Needless to say, that doesn't provide any power protection for the systems.
HP's Intelligent Power Distribution Unit, among other things, identifies which servers are hooked up to which PDUs, and which PDUs are hooked up to which power source. It means that you can quickly and easily identify any wiring problems with the redundant power feeds in your data center. Having spoken with one of the developers working on Insight Control mower management software, he was surprised how often they found this problem at our customer's data centers. With the tons of cables in data centers, it isn't a huge surprise.
If you want to know more about the HP Intelligent Power Distribution Unit, including why it won a SearchDataCenter.com Silver Product of the Year, I'd recommend heading over to theServer Insights blog post on it. And hopefully, if you use this product, you'll find that all your racks have correctly wired redundant power sources.
Jacob Van Ewyk