HP Virtual Server Environment Reference Architecture: Shared Infrastructure for Application Servers
The HP Virtual Server Environment is designed to achieve a greater return on your IT investments by optimizing server resource utilization to align to business priorities in real time. For HP Integrity and HP 9000 servers, the HP Virtual Server Environment (VSE) encompasses a number of fully integrated, complementary components that enhance the functionality and flexibility of an application server environment. HP VSE Reference Architectures are designed to deliver IT solutions with ease and efficiency based on the HP Virtual Server Environment. This HP VSE Reference Architecture is a high-level concept document, with documented best-practices and solution-specific architectural blueprints for an actual implementation, which integrates with HP Integrity servers and key industry applications architectures. Regardless of the form, HP VSE Reference Architectures are designed to achieve a reduction in solution deployment time and performance optimization through the use of modern virtualization and resource sharing techniques.
J2EE application server frameworks
J2EE applications are typically multi-tier applications, where each tier resides on a different host system. A host system could be an actual physical system or a virtual system created with virtualization software running on a shared system. J2EE applications typically include a client tier where the user’s web browser provides the presentation mechanism. The bulk of the application is deployed in the infrastructure of the datacenter in three tiers – the web tier, application tier, and database tier. While the focus of this paper is the application tier, each of these tiers is briefly described in the following sections. Pointers to additional information on these tiers are also provided.
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