If you are running DFSMShsm in a sysplex environment, the following functions can greatly enhance your ability to successfully manage that environment:

Single GRSplex Serialization

Allows each HSMplex, within a single GRSplex, to operate without interfering with any other HSMplex. See Single GRSplex serialization in a sysplex environment.

Secondary Host Promotion

Allows one DFSMShsm host to automatically assume the unique functions of another DFSMShsm host that has failed. See Secondary host promotion.

Control Data Set Extended Addressability

Allows CDSs to grow beyond the 4 GB size limit. See Control data set extended addressability in a sysplex environment.

Record Level Sharing

Allows CDSs to be accessed in record level sharing (RLS) mode. See Using VSAM record level sharing.

Common Recall Queue

Balances the recall workload among all hosts in an HSMplex by implementing a common queue. See Common recall queue configurations.

CDS Backup Contention Notification

Allows a CDS Backup host to communicate via XCF to other hosts in an HSMplex that they should release the necessary resources to allow CDS Backup to begin.