The biggest power savings many organizations will probably experience with Windows Server 2008 R2 is through server consolidation with Hyper-V. “One of our goals was to improve power efficiency, out-of-the-box, with no manual configuration required on the part of administrators. This improvement is derived from a variety of features, including an improved processor power management engine, timer coalescing, tick skipping, and R2’s new core parking capabilities.[…]Another goal for R2 was to provide new capabilities to help people measure and manage power consumption. If you walk up to a server running Server 2003 or 2008 and fire up perfmon, for example, you can’t see power consumption, let alone easily collect that data across your environment. But with R2 and supporting hardware – such as G6 servers from HP which’ve earned Enhanced Power Management Additional Qualifier (www.windowsservercatalog.com) – you can monitor power consumption locally or remotely via WMI, change power plan settings, and even do power budgeting. Of course, these features do require some work on part of IT administrators to make use of this data – to set goals, make changes, and measure impacts,” says Dan Reger.