Much of the current buzz is focused on server virtualization, but virtualization in storage and client devices is also moving rapidly. Virtualization to eliminate duplicate copies of data on the real storage devices while maintaining the illusion to the accessing systems that the files are as originally stored (data deduplication) can significantly decrease the cost of storage devices and media to hold information. Hosted virtual images deliver a near-identical result to blade-based PCs. But, instead of the motherboard function being located in the data center as hardware, it is located there as a virtual machine bubble. However, despite ambitious deployment plans from many organizations, deployments of hosted virtual desktop capabilities will be adopted by fewer than 40% of target users by 2010.
Cloud computing providers deliver a variety of IT-enabled capabilities to consumers. They key characteristics of cloud computing are 1) delivery of capabilities "as a service," 2) delivery of services in a highly scalable and elastic fashion, 3) using Internet technologies and techniques to develop and deliver the services, and 4) designing for delivery to external customers. Although cost is a potential benefit for small companies, the biggest benefits are the built-in elasticity and scalability, which not only reduce barriers to entry, but also enable these companies to grow quickly. As certain IT functions are industrializing and becoming less customized, there are more possibilities for larger organizations to benefit from cloud computing.
Servers "beyond blades"
Servers are evolving beyond the blade server stage that exists today. This evolution will simplify the provisioning of capacity to meet growing needs. The organization tracks the various resource types, for example, memory, separately and replenishes only the type that is in short supply. This eliminates the need to pay for all three resource types to upgrade capacity. It also simplifies the inventory of systems, eliminating the need to track and purchase various sizes and configurations. The result will be higher utilization because of lessened "waste" of resources that are in the wrong configuration or that come along with the needed processors and memory in a fixed bundle.
The internet is arguably the best example of an agile, interoperable and scalable service-oriented environment in existence. This level of flexibility is achieved because of key design principles inherent in the internet/web approach, as well as the emergence of web-centric technologies and standards that promote these principles. The use of web-centric models to build global-class solutions cannot address the full breadth of enterprise computing needs. However, Gartner expects that continued evolution of the web-centric approach will enable its use in an ever-broadening set of enterprise solutions during the next five years.
Enterprises are now investigating taking mashups from cool web hobby to enterprise-class systems to augment their models for delivering and managing applications. Through 2010, the enterprise mashup product environment will experience significant flux and consolidation, and application architects and IT leaders should investigate this growing space for the significant and transformational potential it may offer their enterprises.
Appliances have been used to accomplish IT purposes, but only with a few classes of function have appliances prevailed. Heterogeneous systems are an emerging trend in high-performance computing to address the requirements of the most demanding workloads, and this approach will eventually reach the general-purpose computing market.