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企业私有云数据中心技术方案
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解决方案书
1 需求分析 ···················································································································· 1 1.1
现状分析 ··········································································································· 1
2 整体方案设计 ·············································································································· 3 2.1 2.2
整体解决方案拓扑 ······························································································· 3 云计算平台的搭建 ······························································································· 4
3 基础网络平台设计 ········································································································ 6 3.1
基础网络整体设计 ······························································································· 6
4 安全设计 ·················································································································· 10 4.1 4.2
L2~L4层安全 ··································································································· 11 L4~L7层安全 ··································································································· 13
5 存储设计 ·················································································································· 13
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1 需求分析
1.1 现状分析
数据中心在基础设施和应用系统建设方面取得了很大的成绩，但是在其建设当中，办公网和生产网的资源部署方式仍然是按照应用进行物理的划分，这种部署方式可能存在以下风险和挑战：
资源利用率低
由于应用与资源绑定，每个应用都需要按照其峰值业务量进行资源的配置，这导致在大部分时间许多资源都处于闲置状态，不仅造成服务器的资源利用率较低，而且对资源的共享、数据的共享造成了天然的障碍。
运维成本高
随着企业内部生产网和办公网业务的增加，服务器、网络和存储的设备数量也会出现迅速的膨胀，在传统的数据中心建设模式下，会造成占地空间、电力供应、散热制冷和维护成本的急剧上升，为企业长远的IT投入和运维带来挑战。
业务部署缓慢
在传统的模式下，企业的各个部门如果要部署新的业务，那么在提交变更请求与进行运营变更之间存在较大延迟，每一次的业务部署都要经历硬件选型、采购、上架安装、操作系统和应用程序安装以及网络配置等操作，使得业务的部署极为缓慢。
管理策略分散
当前的生产网和办公网的运维管理缺乏统计的集中化IT构建策略，无法对企业内网的基础设施进行监控、管理、报告和远程访问，IT管理策略分散。
的云数据中心建设作为企业运行关键业务运行平台和进一步发展的基石，必须拥有更强的IT服务能力，保持高效稳定的运行，数据中心的升级建设势在必行。
另外，随着企业IT建设的迅速开展，云数据中心承载着企业内部的关键业务、核心应用，对于信息数据的完整性、业务运行的可靠性、网络系统的可用性的要求越来越重要。
目前IT信息技术已经延伸到企业的各个层面，从企业角度看，云计算有利于整合信息资源，实现信息共享，促进企业信息化的发展。从用户角度看，利用云计算可以独立实现或享受某一项具体的业务和服务。因此云计算将在企业的IT政策和战略中正扮演越来越重要
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