This class represents Coupling Facility Resource Manager (CFRM) couple datasets. A CFRM couple dataset contains CFRM policies, one of which can be active (started), defining how z/OS® manages coupling facility resources.

A CFRM couple dataset can be the active primary, or optionally, the active alternate couple dataset supporting the CFRM coupling function. Minimally, a CFRM couple dataset must be in use as the active primary CFRM couple dataset for CFRM coupling function to be active.

• IBMzOS_CoupleDataset
• ← IBMzOS_CFRMCoupleDataset

The module name of the CMPI provider that is registered for a CIM class which is used by the cimprovider command line tool for the administration of CMPI providers is

• IBMzOS_CFRMCoupleDatasetProviderModule

The physical name of a CMPI provider’s shared object library as it is stored in the hierarchical file system is

• libcmpiIBMzOS_CFRMCoupleDatasetProvider.so

string Name

The name of the couple dataset represented by an instance of this class.

uint32 NumberOfStructures

The number of coupling facility (CF) structures that the CFRM couple dataset is formatted to support.

It is the maximum number of structures that can be defined for use in a policy contained in this couple dataset.

uint32 NumberOfConnectors

Identifies the number of connectors per structure that the couple dataset is formatted to support.

Connectors are programs running under z/OS that establish a connection to a CF structure. It is the maximum number of concurrent connectors that can be supported for each structure defined in the couple dataset.

uint32 NumberOfCFs

The number of coupling facilities the couple dataset is formatted to support.

It is the maximum number of CFs that can be defined for use in a CFRM policy contained in this couple dataset.

uint32 NumberOfPolicies

The number of administrative (inactive) policies that the couple dataset is formatted to support.

boolean SystemManagedDuplexing

Indicates whether or not the couple dataset is formatted to support the use of the system-managed duplexing rebuild process.

System-managed duplexing rebuild is a process managed by z/OS that allows a structure to be maintained as a duplexed pair. The process is controlled by CFRM policy definitions as well as by the program owning the structure. The process can be initiated via operator command (SETXCF), programming interface (IXLREBLD), or can be z/OS-initiated. Note that user-managed duplexing rebuild is controlled and initiated in the same manner as system-managed duplexing rebuild, but is managed by the program owning the structure and applies only to cache structures.

boolean SystemManagedRebuild

Indicates whether or not the couple dataset is formatted to support the use of the system-managed structure rebuild process.

System-managed structure rebuild is a process managed by z/OS that allows a structure to be rebuilt by z/OS. The process is controlled by CFRM policy definitions as well as by the program owning the structure. The process can be initiated via operator command (SETXCF), programming interface (IXLREBLD), or can be z/OS-initiated. Note that user-managed structure rebuild is controlled and initiated in the same manner as system-managed rebuild, but is managed by the program owning the structure and applies only to cache structures.

boolean MessageBased

Indicates whether or not the couple dataset is formatted to support the use of message-based CFRM event notification and confirmation capabilities.