DFSMS is IBM's designation for the DF/HSM, DFDSS, DFSORT and RACF products when used in a DFP Version 3 context.
The Data Facility family and RACF provide complementary functions that make up the Data Facility Storage Management Subsystem (DFSMS). The DFSMS components (DFHSM, DFDSS, DFSORT, and RACF) are all separate complementary products using OS/390/DFP services. However, OS/390/DFP does not have any other DFP or non‑DFP product as a prerequisite to support its functions. Although RACF has also been designated as part of DFSMS, RACF is not a DFP product. The RACF participation is there so that the SAF calls being issued by the DFP DFSMS products will be processed. Without an SAF‑compatible security system (like CA Top Secret, CA‑ACF2, or RACF), there is no security for any DFSMS function.
DFP Release 3 is the provider of the Storage Management Subsystem. In the pre‑release 3 OS/390 DFP, basic data management definition and services are provided for allocation and enforcement of data and storage attributes. In DFP 3, several enhancements have been added to simplify catalog processing, integrate VSAM into standard storage management functions, and to allow definition and enforcement of storage allocation requirements via a CLIST‑like language used for coding data management definitions through the ISMF facility. The concept of absolute device allocation, such as UNIT=3380, is superceded by the concept of generic storage groups and attributes.
|
Copyright © 2013 CA Technologies.
All rights reserved.
|
|