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Software-defined data center (SDDC) (also: virtual data center (VDC)) is a vision for IT infrastructure that extends virtualization concepts such as abstraction, pooling, and automation to all of the data center’s resources and services to achieve IT as a service (ITaaS).〔 〕 In a software-defined data center, "all elements of the infrastructure — networking, storage, CPU and security – are virtualized and delivered as a service." While ITaaS may represent an outcome of SDDC, SDDC is differently cast toward integrators and datacenter builders rather than toward tenants. Software awareness in the infrastructure is not visible to tenants. Because it is a vision with many possible implementation scenarios, SDDC support can be claimed by a wide variety of approaches. Critics see the software-defined data center as a marketing tool and “software-defined hype”, noting this variability.〔 〕 Proponents believe that software will define the data centers of the future and accept the SDDC as a work in progress.〔 〕 Analysts project that at least some software-defined data center components will experience strong market growth in the near future. The software-defined networking market is expected to be valued at about USD $3.7 billion by 2016, compared to USD $360 million in 2013.〔 IDC estimates that the software-defined storage market is poised to expand faster than any other storage market.〔 ==Description and core components== The software-defined data center encompasses a variety of concepts and data center infrastructure components, and each component can be provisioned, operated, and managed through an application programming interface (API).〔 The core architectural components that comprise the software-defined data center include the following: * Computer virtualization, which is a software implementation of a computer. * Software-defined networking (SDN), which includes network virtualization, is the process of merging hardware and software resources and networking functionality into a software-based virtual network.〔 * Software-defined storage (SDS), which includes storage virtualization, suggests a service interface to provision capacity and SLAs (Service Level Agreements) for storage, including performance and durability. * Management and automation software, enabling an administrator to provision, control, and manage all software-defined data center components. A software-defined data center is not the same thing as a private cloud, since a private cloud only has to offer VM self-service, beneath which it could use traditional provisioning and management. Instead, it imagines the data center that can encompass private, public, and hybrid clouds. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Software-defined data center」の詳細全文を読む スポンサード リンク
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