近年来，随着信息技术的发展，企业和政府职能部门的日常工作已基本实现信息化和网络化，负责业务正常运转的IT系统的稳定性和IT系统中的数据安全性，已成为企业信息化和政府信息化的工作的重中之重。但是，中小企业或政府部门独立建设灾备系统不但建设成本高，技术难度大，而且后期维护管理所需要的人力物力投入更大。中国电信准确的把握到了信息化发展的命脉，大力发展具有多个不同级别灾备服务的共享式灾备中心业务，为各政企单位提供同城和异地的数据灾备服务，以及故障时的业务应急切换服务。各政企单位通过租赁电信服务，轻松实现数据容灾。
**电信共享式灾备中心项目是中国电信第一个共享式异地灾备运营系统，此项目的建设标志着中国电信开始尝试共享式灾备中心的运营业务，是运营商向灾备运营业务发展走出的第一步。在可以预见的将来，共享式灾备服务将成为电信运营商新的利润增长点。
共享式灾备中心是一个以灾备服务租赁为核心的运营模式，其建设的思路具有特殊性，不同于电信自有的核心业务的容灾项目。灾备服务租赁业务还处于探索阶段，因此先期投资必须谨慎。小规模初期投入，并且能实现不同类型客户和不同业务系统的容灾需求，是用户以合理的价格购买到灾备服务，保证运营业务得以良性发展的前提。过高的初期投资必然导致用户租用费过高，难以吸引足够的付费客户。因此如何保证灾备中心初期投资小同时又后期扩展灵活，是设计灾备中心时要首要考虑的问题。
UIT共享式灾备中心解决方案采用模块化弹性部署方式，容灾中心由CMM(控制管理模块)和DMM(容灾管理模块)两个大型软硬件整体模块组成，CMM(控制管理模块)负责网络接入、系统管理、软硬件管理，以及客户管理和运营管理；DMM(容灾管理模块)通过灾备服务器、UIT备份软件、UCDP软件、UIT SV3600光线存储设备以及规划中的云存储等模块，负责每个客户容灾功能的实现和灾备数据存储。后期客户数量增加时，只需要简单增加 一个DMM(容灾管理模块)即可。这种架构不仅使得初期投资可控制在一个合理的范围内，还能够保证后期扩展时的方便性。
如何满足不同客户和业务系统的容灾需求？
考虑到共享容灾中心的用户群体涵盖范围广，业务系统差异化大等特点，UIT共享式灾备中心解决方案涵盖文件备份、远程数据备份、持续数据保护、核心业务容灾等4个等级服务。方案兼容不同操作系统，兼容不同存储环境，通用性强，最大程度减少了客户端系统修改和硬件增加，减少了因系统改变而有可能引起的性能降低、流程改变、故障点。
灾备服务如何实现？
对于远程数据备份服务需求，容灾中心采用配置备份管理服务器，安装UIT备份管理软件，对企业用户信息中心各台需要备份的主机进行统一管理。备份服务器后端通过以太网和IP-SAN存储系统连接，备份数据保存在IP-SAN存储系统上。当发生误删除、误操作的逻辑故障时，通过专用网络将数据恢复至用户数据中心。
对于远程应用容灾服务需求，灾备中心配置CDP服务器，建立CDP持续数据保护策略，实现数据的实时保护。当数据库发生故障时，可通过该服务器实现数据恢复，或将接管信息中心数据库的工作，保证数据库系统应用的快速恢复。
如何减少对客户系统的改变
客户系统要上灾备业务，就一定要在客户现有系统中增加软件或硬件。增加硬件设备一般都会改变客户现有系统架构，对现有系统造成影响。如果客户系统以后发生故障，则很有可能将责任推到新增加的硬件设备上，灾备中心运营商就有可能经常会接到投诉。同时，硬件设备发生故障时，一般都需要维护人员到现场来维修和更换。大量的投诉和频繁出现场对于良好地发展运营服务是一个重大打击。UIT共享式灾备中心解决方案在客户端基本上都采用软件方式，具有对客户系统改变较小、没有硬件故障点、简单问题远程就可以解决等特点，因而可以有效地减小接到投诉和现场服务的可能性。
如何减小后期维护工作量？
UIT共享式灾备中心解决方案采用服务器虚拟化和存储虚拟化技术，实现了服务器和存储设备虚拟化管理，Thin Provisioning，异构平台支持等功能，既可以有效利用硬件资源，还可以减小系统管理工作。同时，共享式灾备中心采用了一个统计的管理平台，实现整个灾备中心的资源控制、状态监控、故障报警、性能调整、客户管理、产品和订单管理、计费管理等多个不同的运营管理工作和流程，可大幅度提高运营团队的工作效率，减少运营成本。
UIT成功中标此项目，也标志着电信运营商对UIT灾备体系构架的高度认可，**电信共享式容灾中心项目的建设将对未来整个中国电信灾备中心服务租赁业务的发展具有极强的指导意义和推广价值。
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