IBM Tivoli Monitoring > Version 6.3 Fix Pack 2 > Installation Guides > Installation Guide > Prepare for installation > Windows installation considerations
IBM Tivoli Monitoring, Version 6.3 Fix Pack 2
32 bit versus 64 bit
If your site runs either Windows 2003 or 2008 on 64-bit x86-64 CPUs, you must decide whether to install the 32-bit operating system agent or the 64-bit agent.
The new 64-bit agent supports 64-bit operations and can coexist with other 32-bit agents in the Tivoli Monitoring environment.
- Direct upgrade of the 32-bit Windows agent to the 64-bit agent is not supported. When upgrading a 32-bit agent from a prior release to the current release, you can upgrade only to the current 32-bit agent.
- This new support does not extend to native 64-bit applications (including the operating system) running on the Itanium IA64 architecture.
- This 64-bit support has not been extended to the IBM Tivoli Monitoring servers (the Tivoli Enterprise Monitoring Server and the Tivoli Enterprise Portal Server).
- Support was added for a 64-bit Java Runtime Environment (JRE) to the V6.2.3 release of IBM Tivoli Monitoring. Prior releases supported 32-bit JRE only. The 64-bit JRE can only work on 64-bit machines. The ITM Installer does not allow a 64-bit JRE to be installed on a 32-bit machine. The installation summary dialog informs you of the JRE type being installed.
Parent topic:
Windows installation considerations