sharepoint学习笔记一 安装模式和几个术语

bgvf

SharePoint Services有两种安装模式：StandAlone模式和ServerFarm模式。
StandAlone模式

该模式有如下特点：
There is a single server running Windows SharePoint Services.
Multiple sites and subsites are grouped in site collections on each virtual server in IIS that is extended with Windows SharePoint Services. An Internet Server Applications Program Interface (ISAPI) filter maps incoming URLs to specific sites on that virtual server.
Scaling is achieved by adding site collections to an existing virtual server, or by adding subsites to an existing site collection.
Each virtual server has its own set of content databases in SQL Server or WMSDE. The configuration database directs each virtual server to the appropriate content database for a given Web site. The content for the top-level Web site and any subsites within a site collection is stored in the same content database.
　　总的说来此模式的扩展性不强，不支持负载平衡。

ServerFarm模式

此模式具有如下特点：

• There are multiple separate servers running Windows SharePoint Services and SQL Server.
  
• Multiple sites and subsites are grouped in site collections on each virtual server in IIS that is extended with Windows SharePoint Services. An ISAPI filter maps incoming URLs to specific sites on that virtual server.
  
• Each virtual server has its own set of content databases in SQL Server. The configuration database for the server farm directs each server to the appropriate content database for a given Web site. The content for the top-level Web site and any subsites within a site collection is stored in the same content database.
  
• Performance and capacity are increased by adding additional servers running Windows SharePoint Services and SQL Server.
  
• Scaling is achieved by adding more front-end Web servers (to increase throughput for the existing content), and by adding top-level Web sites and subsites (to support more content).
  
• Load balancing is achieved by using switching and routing hardware, or by using software such as Windows Network Load Balancing Service.
  

　　总的说来此模式的扩展性强，特点是支持负载平衡。

服务器(Server)、虚拟服务器(Virtual Server)、站点集合(Site Collection)、Top Level Site和Multiple Subsites的逻辑关系如下图所示:


几个术语:
Virtual Server：
可把一个物理上的服务器虚拟成多个虚拟服务器，好处是每个虚拟服务器可以有不同的配置信息。例如一个VS对应Intranet,一个VS对Internet它们的身份验证和授权信息各不相同。  
Virtual servers are called Web sites in Internet Information Services (IIS).