You can use the VARY SMS command to control processing for volumes, data sets, or systems.
VARY SMS,CFCACHE(CF_cache_structure_name),ENABLE|QUIESCE
When
a CF cache structure is enabled, VSAM RLS data can be stored in the
cache structure. This is the normal state of operations, and is the
state the CF cache structure is in after the Parallel Sysplex® has
been IPLed. When a CF cache structure is quiesced, no VSAM RLS data
can be stored in it.VARY SMS,CFVOL(volser),ENABLE|QUIESCE
When
a volume is CF-enabled, data contained on this volume can be stored
in a CF cache structure. in the cache structure. This is the normal
state of operations. When a volume is CF-quiesced, no data contained
on it can be stored in a CF cache structure.Use the VARY SMS CFVOL command if it is necessary to modify a volume without using the VSAM PUT/ERASE macros or DFSMSdss. This ensures that when the modified volume is again made available for VSAM RLS processing, CF cache structures do not contain downlevel data.
Rule: Setting a volume to the CF-quiesced state does not stop SMS from selecting this volume during data set allocation. To stop SMS from selecting this volume, issue the VARY SMS command, using the following format: VARY SMS,VOLUME(volser),DISABLE