云计算是近年来非常热门的词，其内涵相当丰富，涵盖了多种技术。优点侧重运营模式，有的侧重技术架构和技术产品，有的强调并行计算和集群部署，有的侧重虚拟化。而且不同的企业根据自身的业务范围和商业应用，对云计算的应用也不尽相同。但是云计算产业被公认为是继大型计算机﹑个人计算机﹑互联网之后的又一次IT产业革命。如何构建出更加高效、稳定、灵活的云计算平台已成为热门研究课题。 本文基于通过某能源企业IT系统运行现状的分析，结合云计算技术的发展趋势，提出通过虚拟化技术对内部IT设备进行资源整合，利用已有的服务器、存储设备并对其进行必要的扩容，将原有各业务系统逐步迁移到云平台上；同时考虑桌面云的应用和实现；实现存储虚拟化。最终提高IT系统服务的业务可靠性和连续性，实现“统一管理、集中运维、按需分配、资源高效”的目标。并在节能降耗方面达到预期，节约人力运维成本，提升企业整体运行能力。

Cloud computing is very popular in recent years, its connotation is rich, covers a variety of technologies. The advantages on the operation mode, and some focus on the technical architecture and technology products, some emphasis on parallel computing and cluster deployment, and some focus on virtualization. But different enterprises according to the business scope and business application, the application of cloud computing is not the same. But cloud computing industry is recognized as a IT industry revolution following the computer, the personal computer and the internet. How to build a more efficient, stable, flexible cloud computing platform has become a hot research topic. In this paper, through the analysis of the running status of the IT system of an enterprise based on the development trend of energy, with the combination of cloud computing, the resource integration of the internal IT device by using virtualization technology, server, storage equipment and the necessary expansion of the original business system, will gradually migrate to the cloud platform; at the same time considering and application of the desktop cloud storage virtualization. Ultimately improve the reliability of IT system services and business continuity, "unified management, centralized operation and maintenance management, distribution according to needs, resources," the goal. Expectations in terms of energy consumption, save manpower and maintenance costs, improve overall operating ability of enterprises.