Datasheet

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Chapter 1: Getting to Know Exchange Server 2007
As shown in Table 1-2, the main difference between Standard and Enterprise
editions amounts to one of scalability. When deciding how much scalability
your organization requires, it’s important to ask questions such as, “Will
your organization really use more than 80TB of storage space?” The Standard
edition supports up to 80TB of storage space, so you may not need anything
more than Standard edition in many situations. Of course, if your organiza-
tion regularly stores huge files, such as videos, you may need the 800TB stor-
age capability of Enterprise edition. The point is to make a decision based on
what you actually need.
Choosing an edition isn’t quite enough to complete the answer of what to
buy for your organization. Exchange Server 2007 also supports two Client
Access License (CAL) editions: Standard and Enterprise. Even though the
edition determines the scalability of the server, the CAL determines the func-
tionality of the server. You can mix and match the editions and CAL options.
Consequently, you may have a Standard edition server with an Enterprise
edition CAL. In addition, you can combine both CALs on a single server, so
you could have an Enterprise edition server with both the Standard edition
and Enterprise edition CALs installed. In short, Microsoft is actually offering
six versions of Exchange Server 2007.
To make things more interesting, Microsoft also throws in a requirement for
volume licensing for some features. To obtain the target feature, you must
buy a volume license. Table 1-3 shows the CAL options.
Table 1-3 CAL Edition Differences
Feature SP1
Required?
Volume
License
Required?
Standard
Edition
Enterprise
Edition
Combined
Edition
Advanced
Exchange
ActiveSync
Policies
Yes No X X
Exchange
ActiveSync
No No X X
Exchange Hosted
Filtering
No Yes X X
Forefront Security
for Exchange
Server
No Yes X X
Managed Custom
E-Mail Folders
No No X X
Managed Default
E-Mail Folders
No No X X