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SAP R/3 with DB2 UDB and ESS Sample Configuration
12
Sample configuration of SAP R/3 with DB2 UDB and IBM ESS
In this configuration, we will work with a standard SAP R/3 installation and describe the
following different scenarios that use the DB2 UDB split mirror functionality:
• Creating a clone SAP system (Snapshot database scenario on page 26)
• Creating a standby SAP database (Standby database scenario on page 28)
• Creating a split mirror copy of the SAP R/3 database for backup and restore
(Split-Mirror online backup scenario on page 31)
• Creating a split mirror copy of the SAP R/3 database that can be copied over the
primary database (Split-mirror restore scenario on page 34
33 )
Figure 1 provides the conceptual overview of the sample configuration.
Primary
Server
Backup
Server
Snapshot for reporting,
testing, etc.
Hot Standby
Offloading database
backups
Database restore
TS1
Database
FlashCopy
IBM ESS F20
TS1
Database
FlashCopy
SAP R/3
System
TS1
SAP R/3
System
TS1
+ change profiles
Figure 1. Conceptual overview
As Figure 1 shows, there are two AIX hosts: one as the Primary Server, the other as the
Backup server.
Ten ESS logical volumes are attached to each system. One logical volume is used for
the SAP system software and configuration files, the others for the database. Two