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

DCOLLECT OutputUCLEVEL Identifies the volume level. Only level 0 and migration level 1volumes are recorded.UCTOTALUCTGOCCUCTROCCUCBFOCCUCAFOCCIndicates the total capacity of this volume in kilobytes.Indicates the target occupancy, or low threshold, assigned to thisvolume. This is the percentage of the volume that you want tocontain data after migration processing. The percentage can rangefrom 0 to 100. This field does not apply to migration level 1volumes.Indicates the high threshold assigned to this volume. When thispercentage of the volume is filled with data, it indicates that youshould run interval migration except for volumes in storage groupswith AM=I.For storage groups with AM=I, the percentage of the volume is themidpoint between UCTGOCC and UCTROCC that indicates whenyou should run interval migration.Indicates the occupancy of the volume before it has been processedby either automatic primary or automatic secondary spacemanagement. For level 0 (user) volumes, this processing is doneduring automatic primary space management. For migration level1 volumes, this processing is done during automatic secondaryspace management. This is a percentage value ranging from 0 to100.Indicates the occupancy of the volume after it has been processedby either automatic primary or automatic secondary spacemanagement. For level 0 (user) volumes, this processing is doneduring automatic primary space management. For migration level1 volumes, this processing is done during automatic secondaryspace management. This is a percentage value ranging from 0 to100.UCNOMIG Indicates the excess eligible data occupancy for level 0 and level 1volumes.For level 0 volumes: This is the percentage of the level 0 volumethat contains data eligible for migration (based on type anddate-last-referenced) that did not migrate because the desiredvolume occupancy was met without it being migrated. Thispercentage, ranging from 0 to 100, can be considered the safetymargin for automatic primary space management.For level 1 volumes: This is the percentage of the level 1 volumethat contains data eligible for migration that did not migrate:The percentage value is valid only if one of the followingconditions is met:vThe automatic secondary space management window is tooshort and MGCFDCOL field is patched to X’FF’ to allowDFSMShsm to collect the DCOLLECT data. This percentagevalue will indicate the percentage of the migrated data sets thatare eligible to be migrated but are not migrated because thesecondary space management window is too short.v None of the level 1 volumes trigger the level 1 to level 2migration because none of their thresholds is met or exceeded.No data movement is initiated from any level 1 volume. ThisAppendix F. Interpreting DCOLLECT Output 505