Understand the requirements for system logger

These planning steps apply for both coupling facility and DASD-only log streams. Each planning step following indicates how it applies to coupling facility versus DASD-only log streams. When there is a difference in how a step should be performed based on the type of log stream, this is indicated as well. Table 1 illustrates the steps required for setting up both types of log streams.

Table 1. Reviewing System Logger Setup Activities
Common Setup Activities	Additional CF Log Stream Steps
Sysplex Environment
Need to be in a sysplex environment (PLEXCFG) Set up sysplex, LOGR couple data sets and LOGR policy Parmlib members — IEASYSxx, COUPLExx	Need to be in a Parallel Sysplex® environment Add coupling facility Set up CFRM couple data sets and policy
Log Stream Configuration
Plan Types of log streams How many log streams Log stream recovery	Map log streams to CF structures Determine structure sizes Plan structure placement Plan peer connector recovery
Naming Conventions
Log stream names Log stream DASD data set names Add log stream DASD data set names to GRSRNLxx inclusion list	CF structure names
DASD Space
Allow for DASD expansion, DSEXTENTs Plan use of retention period for DASD log stream data Plan log stream staging data set size and access Plan SMS data set characteristics for log stream data sets If multisystem sysplex: Need shared catalog Access to DASD volumes Serialization mechanism SHAREOPTIONS(3,3)	Select duplexing method for log stream data
Security Authorization
IXGLOGR address space Administrator of LOGR couple data set Exploiters of log streams	CFRM couple data set and structures For IXGLOGR address space Administrator of CFRM couple data set Exploiters of log stream structures
Activate SMS
Activate LOGR
Establish SMF88 Reporting