z/OS V1R6.0 DFSMS Access Method Services for Catalogs

Chapter 11. DCOLLECTThe DFSMS Data Collection Facility (DCOLLECT) is a function of access methodservices. DCOLLECT collects data in a sequential file you can use as input to otherprograms or applications.DCOLLECT obtains data on:vvvvvvActive Data SetsDCOLLECT provides data about space use and data set attributes and indicatorson the selected volumes and storage groups.VSAM Data Set InformationDCOLLECT provides specific information relating to VSAM data sets residingon the selected volumes and storage groups.VolumesDCOLLECT provides statistics and information on volumes that are selected forcollection.Inactive DataDCOLLECT produces output for DFSMShsm-managed data, (inactive datamanagement), which includes both migrated and backed up data sets.– Migrated Data Sets: DCOLLECT provides information on space utilizationand data set attributes for data sets migrated by DFSMShsm.– Backed Up Data Sets: DCOLLECT provides information on space utilizationand data set attributes for every version of a data set backed up byDFSMShsm.Capacity PlanningCapacity planning for DFSMShsm-managed data (inactive data management)includes the collection of both DASD and tape capacity planning.– DASD Capacity Planning: DCOLLECT provides information and statistics forvolumes managed by DFSMShsm (ML0 and ML1).– Tape Capacity Planning: DCOLLECT provides statistics for tapes managedby DFSMShsm.SMS Configuration InformationDCOLLECT provides information about the SMS configurations. Theinformation can be from either an active control data set (ACDS) or a sourcecontrol data set (SCDS), or the active configuration.DCOLLECT provides attributes that are in the selected configuration for thefollowing:– Data Class Constructs– Storage Class Constructs– Management Class Constructs– Storage Group Constructs– SMS Volume Information– SMS Base Configuration Information– Aggregate Group Construct Information– Optical Drive Information– Optical Library Information– Cache Names– Accounting Information for the ACS routines© Copyright IBM Corp. 1973, 2004 113