DFSMSdfp

DFSMSdfp provides the following functions:

Storage management: DFSMSdfp includes Interactive Storage Management Facility (ISMF), which lets you define and maintain policies to manage your storage resources. These policies help to improve the usage of storage devices and to increase levels of service for user data, with minimal effort required from users. Storage Management Subsystem (SMS) uses these policies to manage storage for the operating system. More specifically, the storage administrator uses SMS to define data classes, storage classes, management classes, storage groups, aggregate groups, copy pools, and automatic class selection routines. You can also use the NaviQuest tool under ISMF to migrate to SMS, maintain your SMS configuration, and perform testing, implementation, and reporting tasks in batch. For more information on storage, ISMF, and NaviQuest, see Managing Storage with DFSMSdfp.
Tape mount management: Tape mount management is a methodology for improving tape usage and reducing tape costs. This methodology involves intercepting selected tape data set allocations through the SMS automatic class selection (ACS) routines and redirecting them to a direct access storage device (DASD) buffer. Once on DASD, you can migrate these data sets to a single tape or small set of tapes, thereby reducing the overhead associated with multiple tape mounts. For more information, see z/OS DFSMS Using the Volume Mount Analyzer and Implementing Tape Mount Management.
Data management: DFSMSdfp helps you store and catalog information on DASD, optical, and tape devices so that it can be quickly identified and retrieved from the system. DFSMSdfp provides access to both record- and stream-oriented data in the z/OS environment. For more information, see Managing Data with DFSMSdfp and Using Access Methods, Commands, and Utilities.
Device management: DFSMSdfp can be used when you define your input and output (I/O) devices to the system and in controlling those devices in the z/OS environment. For more information, see Managing Devices with DFSMSdfp.
Distributed data access: Distributed data access allows all authorized systems and users in a network to use system-managed storage or automated storage management. DFSMSdfp uses the Distributed FileManager/MVS (DFM) or the z/OS® Network File System to enable remote clients in a network to access data and storage resources on z/OS systems. For more information, see Distributed Data Access with DFSMSdfp and z/OS Network File System Guide and Reference.
z/OS UNIX System Services (z/OS UNIX) provides the command interface that interactive UNIX users can use. z/OS UNIX allows z/OS programs to directly access UNIX data.
Advanced copy services: Advanced Copy Services includes remote and point-in-time copy functions that provide backup and recovery of data. When used before a disaster occurs, Advanced Copy Services provides rapid backup of critical data with minimal impact to business applications. If a disaster occurs to your data center, Advanced Copy Services provides rapid recovery of critical data. For more information, see DFSMS Advanced Copy Services.
Object access method: Object access method (OAM) provides storage, retrieval, and storage hierarchy management for objects. For more information, see Objects. OAM also manages storage and retrieval for tape volumes that are contained in system-managed libraries.