tailieunhanh - Cloud Computing & Databases - How databases can meet the demands of cloud computing

Oracle Real Application Clusters (RAC) harnesses the processing power of multiple, interconnected servers on a cluster; allows access to a single database from multiple servers on a cluster, insulating both applications and database users from server failures, while providing performance that scales out on-demand at low cost; and is a vital component of grid computing that allows multiple servers to access a single database at one time. Oracle Database 11g also includes Automated Storage Management (ASM) and Oracle Clusterware. Combining the use of ASM and Oracle Clusterware virtualizes storage, database servers, application servers, holistic management, and all the other aspects. | ScaleDB Cloud Computing Databases How databases can meet the demands of cloud computing by Mike Hogan CEO ScaleDB Inc. November 14 2008 Introduction The potential benefits of cloud computing are overwhelming. However attaining these benefits requires that each aspect of the cloud platform support the key design principles of the cloud model. One of the core design principles is dynamic scalability or the ability to provision and decommission servers on demand. Unfortunately the majority of today s database servers are incapable of satisfying this requirement. This paper reviews the benefits of cloud computing and then evaluates two database architectures shared-disk and shared-nothing for their compatibility with cloud computing. Cloud computing is the latest evolution of Internet-based computing. The Internet provided a common infrastructure for applications. Soon static web pages began to add interactivity. This was followed by hosted applications like Hotmail. As these web applications added more user-configuration they were renamed Software-as-a-Service SaaS . Companies like have led this wave. With a growing number of companies looking to get in on the SaaS opportunity Amazon released Amazon Web Services AWS that enables companies to operate their own SaaS applications. In effect Amazon hosted the LAMP stack which they have since expanded to include Windows as well. Soon others followed suit. Then large companies began to realize that they could create their own cloud platform for internal use a sort of private cloud. So just as the public Internet spawned private corporate intranets cloud computing is now spawning private cloud platforms. Both public and private cloud platforms are looking to deliver the benefits of cloud computing to their customers. Whether yours is a private or public cloud the database is a critical part of that platform. Therefore it is imperative that your cloud database be compatible with cloud computing. In order to .

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