Managing Serviceguard Extension for SAP, December 2007

SAP Master Data Management (MDM)
Installation and Configuration Considerations
Chapter 5246
Single or Multiple MDM Serviceguard Package
Configurations
MDM with SGeSAP can be configured to run either as a “Single"
Serviceguard package (ONE package) OR as "Multiple" Serviceguard
packages (FOUR+ONE).
Single MDM Serviceguard Package (ONE)
• In the case of "Single” MDM Serviceguard package all four MDM
components (mdb mds mdis mdss) are always started and stopped
together on “one” cluster node – the node on which the Serviceguard
package itself is started or stopped on. All four MDM components are
combined or grouped together. This is also is reflected in the name
for this Serviceguard package name called mgroupMDM.
• The naming convention for the Serviceguard packages is: mgroupMDM
- the string “mgroup” stands for mdm grouped components and is
required; the string MDM is used as a placeholder for a System ID and
can be set to any value.
•The mgroupMDM package contains code for dependency checks: it will
ensure that the MDM components are started and stopped in the
correct order: mdb -> mds -> mdis -> mdss - and in the reverse order
for stop.
• The advantage of the Single MDM Serviceguard package is a simpler
setup - less steps are involved in setting up and running the
configuration - but with the limitation that all four MDM server
components always have to run together on the same cluster node.