Mirror Site

A Mirror Site is an exact copy of another Internet site or set offiles on a computer system. Mirror sites are most commonlyused to provide multiple sources of the same information and areof particular value as a way of providing reliable access to largedownloads. A mirror site will also will ensure better availabilityand can increase performance. Mirroring is a type of filesynchronization.

An exact replica of a website or set of files on a computer server that has been copied to another computer server to reduce network traffic, ensure better availability, or make access faster for local users (mirroring is the practice of creating and maintaining mirror sites)

A file server containing a duplicate set of files located in a different geographic area for the purposes of managing heavy traffic, providing security, or ensuring business continuity See also built-in dispersal and dispersal.

Site which mirrors (or duplicates) the contents of another website. Generally search engines prefer not to index duplicate content. The one exception to this is that if you are a hosting company it might make sense to offer free hosting or a free mirror site to a popular open source software site to build significant link equity.