Data Facility Storage Management Subsystem (DFSMS™) is a software suite that automatically manages data from creation to expiration. DFSMS provides allocation control for availability and performance, backup/recovery and disaster recovery services, space management, tape management, and reporting and simulation for performance and configuration tuning.
Integrated, comprehensive data management solution
Delivers managed, predictable service to meet Service Level Agreements for Storage
Up to 50% increased effective storage capacity with reduced overall storage costs
Components
DFSMSdfp (Data Facility Product)
Provides storage, data, program, and device management functions and DFSMS Copy Services capabilities
DFSMS Copy Services—DFSMSdfp through its System Data Mover Component provides DFSMS Copy Services which include Extended Remote Copy (XRC) and Concurrent Copy
z/OS
NFS(Network File System)—provides a way to optimize performance and efficiency
in a distributed network while still capitalizing on the capacity,
security, and integrity of zOS.
XRC Performance Monitor—The XRC Performance Monitor extends the z/OS™ commands of the XRC facility. It provides additional information to better manage an XRC environment and help XRC achieve the desired performance (typically measured as the latency in updating the mirrored system)at a low cost.
IBM TotalStorage (ETL) Expert—provides storage administrators with important, easy to access information about their Magstar 3494 Tape Libraries and Magstar Virtual Tape Servers.
DFSMSdss (Data Set Services) -
An optional feature providing data movement, copy, backup, and space management functions
Concurrent Copy—Concurrent Copy (CC) is both an extended function in cached IBM Storage Controls and a component of DFSMSdss. CC enables you to copy or dump data while applications are updating the data. Both IMS/ESA and DB2 can use CC for their backups.
FlashCopy—FlashCopy provides a fast data duplication capability. This option helps eliminate the need to stop applications for extended periods of time in order to perform backups and restores. FlashCopy is automatically initiated by DFSMSdss on IBM Enterprise Storage Servers (ESS) with the FlashCopy feature.
DFSMSdss Stand-Alone Services—DFSMSdss Stand-Alone Services was previously introduced as an APAR enhancement to all releases of DFSMS. The stand-alone restore function is a single-purpose program designed to allow the system programmer to restore vital system packs during disaster recovery without needing to rely on an OS/390 or z/OS environment.
DFSMShsm (Hierarchical Storage Manager) - An optional feature providing backup, recovery, migration, and space management functions
DFSMSrmm (Removable Media Manager) - An optional feature providing management functions for removable media such as tape cartridges and 3420 reels
DFSMStvs (Transactional VSAM Services) is an optional priced feature that enables batch jobs and CICS online transactions to update shared VSAM data sets concurrently.
DFSORT -
Separate complementary product that provides high performance, sorting, merging, copying, reporting, and analysis of data.
