For coupling facility structure sizing:, See "Determine the Size of Each Coupling
Facility Structure" z/OS MVS Setting Up a Sysplex.
For DASD resources: Both coupling facility log streams and
DASD-only log streams require DASD space for:
- DASD data sets, where data is offloaded from either the coupling
facility or the local storage buffers (for DASD-only log streams).
- Staging data sets, which hold a duplicate of the data from either
the coupling facility or local storage buffers in case of data loss
or system failures.
To plan DASD resources for both coupling facility and DASD-only
log streams, see
"Plan DASD
Space for System Logger" in
z/OS MVS Setting Up a Sysplex.