suresh What is the difference between DFSMS and DFSMShsm in IMS?
DFSMS (Data Facility Storage Management Subsystem) is responsible for managing and controlling storage resources in IMS, ensuring efficient allocation and utilization of storage space. On the other hand, DFSMShsm (Hierarchical Storage Manager) is a component of DFSMS that specifically deals with managing hierarchical storage, such as direct access storage devices (DASD) and tape storage.
The main difference between DFSMS and DFSMShsm in IMS is that DFSMS is a broader storage management subsystem that encompasses various functions, including data backup and recovery, while DFSMShsm focuses specifically on managing hierarchical storage and optimizing storage performance.
Overall, DFSMS provides comprehensive storage management capabilities for IMS, while DFSMShsm plays a more specialized role in managing hierarchical storage resources effectively.
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