One of the four core components of Microsoft Exchange Server. The information store consists of two databases that store Exchange messaging content:
The information store is implemented as a Microsoft Windows NT service or a Microsoft Windows 2000 service and can be accessed by
The information store stores its message content using the Exchange message database encoding format (MDBEF). MAPI clients can access this format directly, but non-MAPI clients require conversion of MDBEF format information to their own messaging format - such as Simple Mail Transfer Protocol (SMTP) or X.400.
An Exchange Server can have a private information store, a public information store, or a private and a public information store. This provision for creation or deletion of information stores allows you to load-balance demand on servers by creating dedicated messaging or dedicated public folder servers in your sites.