Exchange Server 2007 is offered in two server editions: Standard Edition and Enterprise Edition.
|•||Exchange Server 2007 Standard Edition is designed to meet the messaging and collaboration needs of small and medium corporations; it may also be appropriate for specific server roles or branch offices.|
|•||Exchange Server 2007 Enterprise Edition, designed for large enterprise corporations, enables creation of multiple storage groups and databases.|
|Exchange Server 2007 Edition Offerings|
|Feature||Standard Edition||Enterprise Edition|
|Storage Group Support||5 storage groups||50 storage groups|
|Database Support||5 databases||50 databases|
|Database Storage Limit||16 TB per database||16 TB per database|
|Single Copy Clusters||Not supported||Supported|
|Local Continuous Replication||Supported||Supported|
|Cluster Continuous Replication||Not supported||Supported|
|Standby Continuous Replication ***||Supported||Supported|
The numbers of storage groups and databases in the above table is the maximum number of each object that can be created in each edition of Exchange Server 2007. In both editions of Exchange Server 2007, each storage group is limited to a maximum of five databases. Therefore, on the Standard Edition of Exchange Server 2007, the maximum number of databases per server is five, and on the Enterprise Edition of Exchange Server 2007, the maximum number of databases per server is fifty. For more information, see Managing Storage Groups and Databases at http://technet.microsoft.com/en-us/library/aa998926.aspx.