Microsoft Exchange Server

In addition to the development requirements for your application, you should anticipate the run-time system requirements for Microsoft® Exchange Server version 4.0 or later. These requirements are shown in the following table.

Users Processor Disk space RAM
Minimum Intel 486 or faster; or supported RISC-based microprocessor such as the MIPS R4000 and Digital Alpha AXP; or PowerPC At least 250 MB of available hard disk space for Microsoft Exchange Server after Windows NT Server has been installed

Adequate available disk space for the Windows NT Server pagefile (50 MB plus the amount of physical RAM)

At least 32 MB (48 MB for RISC-based systems)
Recommended Intel Pentium 90 MHz or faster Sufficient disk space for your users' e-mail and public folder information

Multiple physical drives

At least one striped drive set

Adequate available hard disk space for the Windows NT Server pagefile (100 MB plus the amount of RAM)

At least 32 MB (48 MB for RISC-based systems)

Note  The preceding system requirements are based on the assumption that Microsoft Exchange Server is installed and running on top of Windows NT Server. These requirements incorporate general Windows NT Server requirements but may vary depending on your specific system environment.

For more information about processor or memory requirements for Microsoft Exchange Server, see the Microsoft Exchange Server Concepts and Planning Guide.