云数据中心策略与解决方案.pptVIP

* 美国时间2008年9月24日 * 适应业务需求调整缓慢: 如省级集中的情况下地市级部门服务器如何发挥作用和技术优势？ * 更加昂贵、更加复杂、效率降低、更难管理 : 效率、成本、维护等问题全部出现了。 We have a very complex I.T. environment with many “best of breed” components that we have chosen to integrate together ourselves. We have a high proportion of customised software and interfaces. We have multiple, duplicate applications and versions of data. This creates the need for a very high amount of data movement between different systems. Our environment is inflexible and difficult to change. Our current applications systems are mostly not online “capable” (web enabled). The state of our data does not allow us to obtain a full 360 degree view of our customers, nor does it enable us to move online and present a cohesive view to our customers of their relationship with us. We have not created our I.T. environment in accordance with a comprehensive architectural framework. This has compounded complexity and increased time to deliver new functionality. The environment is costly to maintain and operate and very costly to enhance or to integrate new functionality. * * Jeff Bezos’ quote: /8301-13953_3-9977100-80.html?tag=mncol Kevin Marks quote: /8301-13953_3-9938949-80.html?tag=mncol video interview * Another definition: “Cloud computing is a model for delivering IT infrastructure, applications, and data that shifts the emphasis from stand-alone silos to pooled, shared resources, dynamically allocated among various tasks and accessed via a network.” * * Virtualization and Clustering are the two key technologies that make up Grid Computing. These technologies are complementary. Unlike what some other vendors would have you believe, Cloud Computing is NOT just server virtualization. Clustering is also an important enabler to cloud computing. Virtualization: makes a single computer look like many computers. The size and power are variable/configurable. Virtual machines can be migrated without downtime Virtual machines enable far more detailed accounting o