The Exchange 2003 device CAL is required for each device accessing the server and entitles access rights to an unlimited number of users sharing this common device. An example of such a device is a kiosk running Outlook Web Access that is shared by several e-mail users. To compete successfully in today's challenging business climate, organizations must enable more efficient ways for information workers to communicate and collaborate. E-mail is currently the most widely used collaborative technology. More businesses use Exchange for e-mail-based collaboration than any other product. Exchange 2003 enables information workers to gain access to critical business communications almost whenever and wherever they need to and is designed to deliver greater security, availability, and reliability. Exchange 2003 sets a new benchmark for low total cost of ownership (TCO) by helping your information technology (IT) staff to do more with less through improved management tools.<p>Processor Intel Pentium or compatible 133-megahertz (MHz) or higher processor Operating system* Microsoft Windows® 2000 Server, Windows 2000 Advanced Server, or Windows 2000 Datacenter Server with SP3 or later Microsoft Windows Server&#8482; 2003, Standard Edition; Windows Server 2003, Enterprise Edition; or Windows Server 2003, Datacenter Edition Memory 256 megabytes (MB) of RAM Available hard-disk space 500 MB on the hard disk where you install Exchange 2003 200 MB on the system drive Drive CD drive Display VGA or higher resolution monitor Input device Microsoft Mouse or compatible input device File format Disk partitions must be formatted for the NTFS file system, not the file allocation table (FAT) file system. This requirement applies to: - System partition - Partition storing Exchange binaries - Partitions containing transaction log files - Partitions containing database files - Partitions containing other Exchange files