Operating System Requirements

This section discusses the recommended minimum hardware requirements for Exchange 2010 servers.

Exchange 2010 unified messaging supports the following processors:

• x64 architecture-based Intel Xeon or Intel Pentium family processor that supports Intel Extended Memory 64 technology

• x64 architecture-based computer with AMD Opteron or AMD Athlon 64-bit processor that supports AMD64 platform

The Exchange 2010 unified messaging memory requirements are as follows:

• 2 GB of RAM minimum

• 4 GB of RAM recommended

The Exchange 2010 unified messaging disk space requirements are as follows:

• A minimum of 1.2 GB of available disk space

• Plus 500 MB of available disk space for each unified messaging language pack

• 200 MB of available disk space on the system drive

• DVD drive

As features and complexity of the applications such as Exchange 2010 have grown, the installation code bases have grown proportionally. Luckily, so have the hardware specifications of the average new system, which now typically includes a DVD drive.

Exchange 2010 unified messaging supports the following operating system and Windows components:

• Windows Server 2008, x64 Standard Edition

• Windows Server 2008, x64 Enterprise Edition

• Windows Server 2008 R2, x64 Standard Edition

• Windows Server 2008 R2, x64 Enterprise Edition

Exchange 2010 unified messaging requires the following components to be installed:

• Microsoft .NET Framework Version 3.5

• Windows PowerShell 2.0

• Microsoft Management Console (MMC) 3.0

Out of the box, an Exchange 2010 Unified Messaging server is configured for a maximum of 100 concurrent calls. This is enough to support potentially thousands of users, given that the number of calls and voice messages per day is a fraction of the number of users and is spread out throughout the day.