The number of log streams you'll need to define for SMF logging
is primarily a matter of how you want to log data at your installation.
For example:
- Do you want one log stream per system? You can define either coupling
facility or DASD-only log streams for this purpose.
- Do you want to create different log streams that merge specific
SMF record types from different systems? For example, you could create
a coupling facility log stream for job related data and collect record
type 30 data from all the systems in your sysplex.
Basically, this particular decision is up to your installation,
but you can also check the
"Plan the System
Logger Configuration" topic in
z/OS MVS Setting Up a Sysplex.