HP ProLiant BL660c Introducing logical servers: Making data center infrastruct - Page 4

Figure 2 illustrates how a logical server could be created from a physical resource pool using HP Virtual Connect (VC) modules to form a VC domain. The logical server can be created from and moved to any compatible resources in a domain; or it can remain as an inactive profile without any defined resources. The ability to move the logical server profile requires sharing of resources3 at all levels, including shared storage solutions for the OS boot image, the application image, and the application data. Figure 2. Creating logical servers using resource pools such as Virtual Connect domains The key components for a logical server environment include • Stateless compute environment-for instance, servers connected to shared storage that share all boot, application, and data volumes using methods such as Fibre Channel SANs. This provides the means for a logical server to move to other physical machines or virtual machines by connecting another machine to the same storage resource. • Physical layer abstraction-for physical machines in a resource pool to be created as logical servers. • Software layer abstraction-to create logical server profiles using virtual machines, whether the virtual machines are within a physical resource pool or on a discrete server, as shown in Figure 1. • HP Insight Dynamics - VSE software-software to assist with creating and managing logical servers. Insight Dynamics - VSE runs on a CMS and replaces the manual steps for creating and 3 Sharing may be done concurrently or sequentially. 4