Principled Technologies, Inc. 3Dell PowerEdge C6220 and CentOS 6.2: A LAMP ReferenceArchitectureEXECUTIVE SUMMARYWith the dominance of cloud computing in today’s marketplace, companiesrequire a reliable and powerful platform on which to deliver their cloud and applicationservices. The massive data centers designed to provide cloud computing services requirea large number of servers that are efficient, powerful, flexible, and are easy to maintain.Software must be low cost, feature laden, and easy to integrate. Using a low-costoperating system paired with the Dell PowerEdge C series servers can allow serviceproviders and other companies to deliver high-quality and efficient applications to theircustomers.Dell designed the Dell PowerEdge C series, which includes the Dell PowerEdgeC6220, specifically to meet the needs of these organizations that need to deploy large-scale environments. In this reference architecture, we look at some of the manybenefits that the Dell PowerEdge C6220 server can bring to large deployments anddescribe in detail the setup of a common configuration: CentOS running on the DellPowerEdge C6220.Organizations often use open-source Linux-based operating systems, such asCentOS, in these hyper-scale environments due to their price point, flexibility, ease ofmanagement, and performance capabilities. These operating systems offer many built-in application stacks, hypervisors, and other features that allow organizations to offertheir customers a comprehensive set of services. In this document, we walk you throughthe task of deploying one such operating system, CentOS Server, and theLinux/Apache/MySQL/PHP (LAMP) application stack on one node of the PowerEdgeC6220, from start to finish.The Dell PowerEdge C6220 serverThe Dell PowerEdge C6220 server features up to four independent 1U hot-swappable, two-socket server nodes that each harness the power of the Intel® Xeon®processor E5-2600 series to maximize performance for hyper-scale environments.Designed for flexibility, the multiple independent server nodes allow you to mix andmatch workloads on different servers within the same chassis. If your requirementsdemand it, configurations are available that feature just two independent 2U nodes,with greater I/O capacity. The high performance levels it delivers, coupled with a simple,modular, and easy-to-maintain design, make the Dell PowerEdge C6220 an optimalchoice for large software as a service (SaaS) and cloud deployments. Figure 1 presents a1U server node of the Dell PowerEdge C6220.The Dell PowerEdge C6220 is available with multiple storage controller options,such as onboard storage with the Intel C600 chipset, the LSISAS2008 6Gb SAS mezzanine