Less is More. This is true not only as a Zen Buddhist philosophical tenet, but also in the world of server management.

This saying now has significant meaning for the Emanuel County School System (ECSS), which this post covers, as well as many other school systems which I will blog about in the coming weeks. In general, Virtual Iron has been the solution of choice for K-12 school systems across the US.

Emanuel County is located 90 miles west of Savannah, Georgia. It covers almost 700 square miles in east-central Georgia and is home to just over 22,000 residents. While the area is largely rural, the county school district puts a high priority on developing strong educational programs and it views information technology as an important enabler for achieving this goal. The school system educates 4,500 students in eight schools covering pre-K through 12th grade.

As the school system has grown, it has put increasing pressure on its IT systems. The district moved into a new centralized data center, bought new, more powerful servers and, for a short time, resolved its problems. But, as the county, its school system, and its IT needs continued to grow, the school system quickly outgrew the capacity of its new data center. Where it started with 20 servers, Emanuel County quickly added more to meet increasing demand. This created significant power and space issues. There was pressure to add additional servers as well, but retrofitting the data center to accommodate that growth was a very expensive proposition. This led to a decentralized architecture with seven different locations each housing three to four servers supporting the school district. The root cause of this server sprawl was the low utilization of the school system’s existing server infrastructure. Each server was dedicated to a single application running, in most cases, at less than 15% utilization. This was a clear indication that implementing server virtualization would pay significant dividends in terms of both OpEx and CapEx savings.

ECSS looked at several vendors, including VMware, but deemed it too expensive and too complex. They also tested both Citrix XenSource and Novell Xen, but did not feel the capabilities in these solutions were comprehensive enough to meet its needs. These solutions also required Linux command line programming which introduced unnecessary complexity for the ECSS IT staff. They then learned about Virtual Iron, and after extensive internal testing, found it much easier to use and afford.

Today, with the help of server and storage virtualization from Virtual Iron and LeftHand Networks, ECSS has streamlined its data center, reducing its number of servers from 38 to 18, with half of those servers part of a hot backup site for disaster recovery. With this consolidation, the school system has not only reduced its power and cooling costs, but also avoided the physical labor, capital expenses and server outages that would have resulted from retrofitting its existing data center with additional cooling and power outlets.

The school district is running Windows and Linux workloads side by side on the same servers. Typical Windows workloads being virtualized include the district’s e-mail archive system, Zenworks Configuration Management, and eDirectory services. Typical Linux workloads include Novell OES2, SASI Student Information System and Novell GroupWise. Emanuel County and SSI report no performance degradation on those workloads.

Mike Grandinetti