Specifications

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Chapter 3. Installing the SAP R/3 Base System
This chapter describes the installation of SAP R/3 Release 3.1G with Oracle on
Windows NT. SAP strongly recommends that R/3 only be installed by certified R/3
installers. Please refer to SAP installation documentation for further details.
It is important to first complete the SAP planning described in Appendix D, “SAP
R/3 Sizing and Installation Planning” on page 141 please refer to that chapter for
details on:
• Server configuration - centralized or distributed
• Disk layout
• Choosing an SAP system name, referred to as SAPSID. The SID we chose for
the residency was RDU.
• Choosing a host name
Be sure you follow instructions in Chapter 2, “Configuring the Hardware and
Installing Windows NT” on page 17 for installing NT. The chapter covers:
• Formatting partitions with recommended allocation size
• Allocating page space
• TCP/IP host name considerations
• Performance settings
It is also critical that the SAP OSS notes associated with the install be carefully
reviewed.
3.1 System Configuration Overview
Our installation was a distributed system consisting of:
• one central instance with database server
• two application servers
We installed R/3 Release 3.1G for Oracle.
Our hardware configuration was:
• Netfinity 7000 Central Instance with Database
– 768 MB main memory
– Twelve 4.51GB disk drives
– RAID controller
– Four processors
• Netfinity 7000 Application Server
• IBM Server 325 Application Server
We decided to distribute the data on our central instance as follows:
• Windows NT and paging on two mirrored 4.5 GB disks
• Oracle redo logs on two mirrored 4.5 GB disks