Planning the Installation
You can distribute SAP software in several ways on the available hardware. The result of the sizing may also influence this decision because the distribution of the software can affect system performance. Some examples and considerations follow:
Central system: All software needed for an SAP system, except the SAP GUI software for end users, is installed on one computer. This setup is useful in small companies where one server is able to offer all the hardware resources needed for the system.
Stand-alone database instance: In this scenario, the database gets its own hardware. In this way, interferences from the SAP instance on database performance are excluded. Because you can size this central hardware as large, you can use this setup in large installations with several thousand users.
Dialog instance: If you decide to install a central system and a need arises for additional SAP system users, an additional dialog instance is a possible solution. If you are using a stand-alone database instance, you need at least one dialog instance. A dialog instance may host as many users as their corresponding hardware allows. SAP systems may have many dialog instances. Productive systems with more than 20 dialog instances exist. In addition, it is possible, as shown in this workshop, to install multiple instances on one server.
Gateway instance (not shown): Optionally, a gateway instance can be set up to offer powerful communication performance for SAP systems that exchange data
with external systems with a high load.
Network: External Ports Used by the SAP System
Explain the standard ports used by SAP systems and the network load to be expected in a productive environment.
Network Requirements
Technical Requirements
A well-designed technical infrastructure ensures the lowest cost of ownership and improves the system's:
- Performance
- Functionality
- Availability
- Scalability
- Security
Find more information at http://service.sap.com/ti (ti = Technical Infrastructure). The technical infrastructure describes the technical setup of SAP ERP Central Component. The technical setup includes the network layout, the server layout, the disk layout of the database, the type of computer interface used and many more details.
The technical infrastructure influences the listed technical areas.
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