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EMC ScaleIO is a software-defined storage product from EMC Corporation that creates a server-based storage area network (SAN) from local application server storage, converting direct-attached storage into shared block storage. It uses existing host-based internal storage to create a scalable, high-performance, low-cost server SAN. EMC promotes its ScaleIO server storage-area network software as a way to converge computing resources and commodity storage into a “single-layer architecture.” ScaleIO can scale from three compute/storage nodes to over 1,000 nodes that can drive up to 240 million IOPS of performance. Developers can deploy the ScaleIO software on-prem commodity infrastructure or in the cloud and then port their applications back into a production ScaleIO instance. As of September, 2015, ScaleIO is also available from the company bundled on EMC commodity computing servers (officially called EMC ScaleIO Node). ScaleIO can be deployed as storage only or as a converged infrastructure combining storage, computational and networking resources into a single block. Capacity and performance of all available resources are aggregated and made available to every participating ScaleIO server and application. Storage tiers can be created with media types and drive types that match the ideal performance or capacity characteristics to best suit the application needs. It is available for free for testing (with community support) or as a paid-for EMC-supported option. == History == ScaleIO was founded in 2011 by five storage sector veteran technologists, including Boaz Palgi, Erez Webman, Lior Bahat, Eran Borovik, and Erez Ungar. The founders stressed the emerging ubiquity of elastic storage – comparing it to RAM prices – and said it should be able to scale to thousands of nodes. To achieve this scalability, the ScaleIO founders separated the ScaleIO Data Client (SDC) functions from those of the ScaleIO Data Server (SDS). The company was backed by venture capital firms including Greylock Partners and Norwest Venture Partners (NVP). EMC Corporation bought ScaleIO in June 2013, only about six months after the company emerged from stealth mode. Paying the product little heed initially, EMC began promoting ScaleIO more aggressively in 2014 and 2015, marketing it in competition with EMC’s own storage arrays. Also in 2015, EMC introduced a model of its VCE (company) hyper-converged Server SAN appliance that that supports ScaleIO storage. At EMC World 2015, EMC announced that ScaleIO will be made freely available to developers for testing purposes. As of May, 2015, developers can download the ScaleIO software with no time or capacity limits, and all the features available in the commercial product. In September 2015, EMC announced the availability of the previously software-only ScaleIO pre-bundled on EMC commodity hardware, called EMC ScaleIO Node. 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「EMC ScaleIO」の詳細全文を読む スポンサード リンク
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