服务器虚拟化方案

服务器虚拟化 服务器虚拟化技术在中小型企业的应用 云计算是分布式计算、并行计算、效用计算、网络存储、虚拟化、负载均衡等传统计算机和网络技术发展融合的产物, 云计算技术是IT发展史上一次巨大的革命， “私有云”、“大数据”的时代离我们越来越近。中小型企业想享用这个新技术，可先从“服务器虚拟化技术”应用入手，来优化企业的网络架构，扩展服务器应用的性能。 一、什么是服务器虚拟化,服务器虚拟化有何优势, 服务器虚拟化就是将服务器物理资源抽象成逻辑资源，让一台服务器变成几台甚至上百台相互隔离的虚拟服务器，我们不再受限于物理上的界限，而是让CPU、内存、磁盘、I/O等硬件变成可以动态管理的“资源池”，从而提高资源的利用率，简化系统管理，实现服务器整合，让IT对业务的变化更具适应力。 越来越多的公司意识到，服务器优化和合并大有益处，可以发挥硬件投资的全部潜力。虚拟化技术已经成为合并服务器并最大限度地提高服务器计算能力的有效途径，同时还能减少服务器数量。 企业可以用服务器虚拟化工具在两个或多个高容量X86物理服务器中建立服务器虚拟示例，从而减少服务器数量，这样企业就可以高效利用和管理服务器计算容量，打破“一服务 一个应用”模式。 二、中小型企业服务器应用现状 现在的中小型企业一般几套信息化管理系统，如ERP系统(财务系统+业务系统)、OA、HR、公司网站等。网络拓扑图可能和下图相equipment, components, equipment, temporary construction facilities, processed with strict compliance with provisions of construction floor plans, smooth roads and drainage, site formation. ----3, the site looks dignified and elegant and tidy, advertising slogans to write eye-catching appearance, walls to be clean and tidy. 4, "six-second figure"----cards to complete, custom, eye-catching, hanging in the obvious place. Management----5, district administration, "launch of Qing dynasty" focuses on managing the "cleaning, recycling, use," four Central Bank; the work is finished, clean, clear, work product protection in all procedures to periodically check the appraisals in a timely manner. 6, clean health----engineering work sites, temporary facilities clean and tidy inside and outside. 7, mechanical health----engineering machinery, vehicles are maintained in good condition, looks clean, and free from dirt, dust, electrical switchgear (box) complete with lock, mechanical safety protection equipment and complete, sensitive and reliable. 8, fire, defend----perfect fire system, set in accordance with requirements of fire equipment, set up obvious fire safety signs and signage, provide effective fire-fighting equipment, establishment of a security system, and out of the site staff to wear to work, marks and signs, implements 似: 上图红框内服务器是“一台服务器、一个应用”的传统模式。企 业为了保障各个IT系统的正常运作，需要增加一至二台服务器备机。 如果发生服务器宕机且系统不能恢复故障时，要恢复原来应用系统起 码要几小时，如果应用系统数据不能恢复的话，哪将是一场大灾难了。 现在企业对信息化系统依赖性越来越强，信息化系统的瘫痪将直接影 equipment, components, equipment, temporary construction facilities, processed with strict compliance with provisions of construction floor plans, smooth roads and drainage, site formation. ----3, the site looks dignified and elegant and tidy, advertising slogans to write eye-catching appearance, walls to be clean and tidy. 4, "six-second figure"----cards to complete, custom, eye-catching, hanging in the obvious place. Management----5, district administration, "launch of Qing dynasty" focuses on managing the "cleaning, recycling, use," four Central Bank; the work is finished, clean, clear, work product protection in all procedures to periodically check the appraisals in a timely manner. 6, clean health----engineering work sites, temporary facilities clean and tidy inside and outside. 7, mechanical health----engineering machinery, vehicles are maintained in good condition, looks clean, and free from dirt, dust, electrical switchgear (box) complete with lock, mechanical safety protection equipment and complete, sensitive and reliable. 8, fire, defend----perfect fire system, set in accordance with requirements of fire equipment, set up obvious fire safety signs and signage, provide effective fire-fighting equipment, establishment of a security system, and out of the site staff to wear to work, marks and signs, implements 响正常业务的运作，给企业带来经济损失。服务器虚拟技术则可为IT管理人员解决了这一难。哪中小型如何来采用服务器虚拟化技术呢, 三、服务器虚拟化方案 服务器虚拟化常用软件有三种:Citrix XenServer ;微软 Windows Server 2008 Hyper-V;VMware ESX Server。三款软件功能差异不大，各位可根据喜爱任选一款。 假如企业IT基础构架如上图，可进行虚拟化的服务器有二台:HP DL380 G7，则企业可采取如下虚拟化方案。 1、本方案需购置如下一些设备: (1)一台服务HP DL388 G8。配置要求:磁盘二块做RID1，内存64G-128G，DL380 G7内存也建议配置64G-128G。 (2)一台HP P2000(双机头设备冗余)作为数据存储，从扩招性equipment, components, equipment, temporary construction facilities, processed with strict compliance with provisions of construction floor plans, smooth roads and drainage, site formation. ----3, the site looks dignified and elegant and tidy, advertising slogans to write eye-catching appearance, walls to be clean and tidy. 4, "six-second figure"----cards to complete, custom, eye-catching, hanging in the obvious place. Management----5, district administration, "launch of Qing dynasty" focuses on managing the "cleaning, recycling, use," four Central Bank; the work is finished, clean, clear, work product protection in all procedures to periodically check the appraisals in a timely manner. 6, clean health----engineering work sites, temporary facilities clean and tidy inside and outside. 7, mechanical health----engineering machinery, vehicles are maintained in good condition, looks clean, and free from dirt, dust, electrical switchgear (box) complete with lock, mechanical safety protection equipment and complete, sensitive and reliable. 8, fire, defend----perfect fire system, set in accordance with requirements of fire equipment, set up obvious fire safety signs and signage, provide effective fire-fighting equipment, establishment of a security system, and out of the site staff to wear to work, marks and signs, implements 考虑，P2000存储最多可扩展至 149 块硬盘。可混合使用 LFF 和 SFF 企业级 SAS 和存档类SATA 硬盘。建议做RID5后，存储空间有3-4T。 (3)二台千兆二层交换机，服务器与数据存储之间交换设备实现链路主、备冗余。 2、虚拟化实施步骤(虚拟软件以VMware ESX Server为例) (1)在HP DL388 G8安装VMware ESX Server、vSphere Client。 (2)在Vcenter上建一个集群，加入10.110.3.101主机(DL388)。 (3)在10.110.3.101主机上新建一个虚拟机，按照物理机应用系统的要求配置虚拟机硬件，然后在虚拟机上安装相关操作系统和应用软件系统，安装完成后把虚拟机迁移到HP2000存储上。应用系统测试成功后，就能切换第一台物理机上的应用系统了。至此就完成了第一台物理机上应用系统向虚拟机的迁移。 (4)拿下DL380 G7服务器上多余的硬盘，保留二块(做riad 1),然后在DL380 G7上安装虚拟化软件。并加入主机集群，主机名(10.110.3.102)。 (5)按照同样的方式，完成第二台DL380 G7向虚拟机的迁移。主机名(10.110.3.103) (7)所有应用系统都迁移到虚拟机上后，可根据集群内三个主机负载，动态迁移各个应用系统。 (8)把物理机上多出的磁盘，并入HP2000阵列，扩大数据存储空间。 equipment, components, equipment, temporary construction facilities, processed with strict compliance with provisions of construction floor plans, smooth roads and drainage, site formation. ----3, the site looks dignified and elegant and tidy, advertising slogans to write eye-catching appearance, walls to be clean and tidy. 4, "six-second figure"----cards to complete, custom, eye-catching, hanging in the obvious place. Management----5, district administration, "launch of Qing dynasty" focuses on managing the "cleaning, recycling, use," four Central Bank; the work is finished, clean, clear, work product protection in all procedures to periodically check the appraisals in a timely manner. 6, clean health----engineering work sites, temporary facilities clean and tidy inside and outside. 7, mechanical health----engineering machinery, vehicles are maintained in good condition, looks clean, and free from dirt, dust, electrical switchgear (box) complete with lock, mechanical safety protection equipment and complete, sensitive and reliable. 8, fire, defend----perfect fire system, set in accordance with requirements of fire equipment, set up obvious fire safety signs and signage, provide effective fire-fighting equipment, establishment of a security system, and out of the site staff to wear to work, marks and signs, implements 至此你单位服务器虚拟化工作就大功告成。登录Vcenter client,你可看到如下管理界面: 本虚拟化方案考虑要尽量减少成本投入，是把三台不同的服务器 加入一个群集，开启了VMware EVC的CPU兼容模式，降低了CPU的 一些性能。如果你条件允许可购买二台DL388 G8服务器作为一个集 群，二台DL380 G7服务器作为另一个集群。实现这个服务器虚拟化 方案后，肯定能大大提高了你公司服务器管理的灵活性、高效性、安 全性。 equipment, components, equipment, temporary construction facilities, processed with strict compliance with provisions of construction floor plans, smooth roads and drainage, site formation. ----3, the site looks dignified and elegant and tidy, advertising slogans to write eye-catching appearance, walls to be clean and tidy. 4, "six-second figure"----cards to complete, custom, eye-catching, hanging in the obvious place. Management----5, district administration, "launch of Qing dynasty" focuses on managing the "cleaning, recycling, use," four Central Bank; the work is finished, clean, clear, work product protection in all procedures to periodically check the appraisals in a timely manner. 6, clean health----engineering work sites, temporary facilities clean and tidy inside and outside. 7, mechanical health----engineering machinery, vehicles are maintained in good condition, looks clean, and free from dirt, dust, electrical switchgear (box) complete with lock, mechanical safety protection equipment and complete, sensitive and reliable. 8, fire, defend----perfect fire system, set in accordance with requirements of fire equipment, set up obvious fire safety signs and signage, provide effective fire-fighting equipment, establishment of a security system, and out of the site staff to wear to work, marks and signs, implements