Database Reference
In-Depth Information
Hardware Procurement
Usually, the hardware vendor provides several configurations for the physical layout of the
SAP systems. The systems integrator reviews these options and, working closely with the
client, will make a recommendation for one of the configurations. After client sign-off on
the final hardware recommendation, the order is placed and the physical servers are de-
livered to the clients or the hosting provider's data center and are installed by the data center
and network team.
Download the SAP Installation Guides
SAP installation guides can be downloaded from the SAP Portal (SAP Service Marketplace
at http://service.sap.com/instguides | SAP NetWeaver | SAP NetWeaver 7 | Installation | In-
stallation Guide. You can download the specific guide you need, such as SAP NW AS
ABAP or NW AS Java. The installation guide is generally divided into several sections. The
planning and preparation sections are the most relevant for us in this chapter. These sections
usually include activities such as hardware and software requirements and preparations, dis-
tribution of the usage types into one or more systems, creation of installation user accounts,
and setting up the file system for the software. Usually, a Basis administrator compiles a list
of activities from theses sections and translates this to a UNIX build specification document.
This document forms the basis for preparing the hardware for the installation of the new
SAP system. Let us now look into some installation definitions and a sample of the UNIX
build specification used for an actual physical installation.
SAP Installation Definitions/Terminology Up to NW 7.0
An understanding of the following definitions will help you plan your build specification
and perform the install for releases upto NW 7.0.
Central Instance
The central instance refers to the application services for the SAP system, including the en-
queue and message services that are located on a single host machine. The central instance
has multiple work processes for the dialog, update, and background services. The machine
on which it runs is called the central host.
Database Instance
The instance associated with the underlying database of the SAP application is referred to as
a database instance.
Search WWH ::




Custom Search