Datasheet

Evaluating and Planning Server Deployment Based on Best Practices, Budget, and
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As a general guideline, you should consider Exchange Server 2007 Enterprise
Edition for large Mailbox servers that host 1,000-plus users or that need high
availability due to their importance. All other servers, like Hub Transport or
Client Access servers, should have Exchange Server 2007 Standard Edition to
preserve your budget.
Exchange Server 2007 Client Access Licenses
Exchange Server 2007 comes with two client access license (CAL) editions that are also called
Standard and Enterprise. The difference from the server editions is that the CAL is an additive
license, so you always need to buy a Standard Edition CAL and then add an Enterprise Edition
CAL to gain advanced functionality, such as managed folders.
Both CAL editions can run against either server edition; thus a Standard CAL can run
against an Enterprise Edition server and vice versa. Table 1.5 shows an overview of what each
CAL edition offers.
TABLE 1.4 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 limit 16TB storage limit 16TB storage limit
Single-copy clusters Not supported Supported
Local continuous replication Supported Supported
Cluster continuous replication Not supported Supported
TABLE 1.5 Exchange Server 2007 Client Access Licenses
Features Standard CAL Enterprise CAL
Email, shared calendaring, contacts, tasks X
Outlook Web Access X
Exchange ActiveSync X
81461.book Page 21 Wednesday, December 12, 2007 4:49 PM