Understanding Site Collections
First and foremost, a site collection is a (hierarchically arranged) logical container for grouping sites. From there, you need to know that the top-level site in a site collection is often a portal site that aggregates content from subsites - although this isn’t required - and that a Web application can host multiple site collections. The number of site collections you create depends on many factors. Every site in a collection shares navigation, security and permissions, templates, and content types. You should plan to group together sites that need to share these items and make them a site collection. Before you create a site collection, gather several pieces of information - including these: Path: You can determine the path to your site collection before you create it. The servername in the URL is determined by the Web application. Your two default options are to create the site collection at the root of the URL or at the sites path. Subsites are created below th...