Nice one Rex,  

Appendix B shows.......

MIGRATED        │ MIGDS           │ This is the number of data sets 
that 
has │
│ DS--TRKS        │ MIGTRKS         │ been migrated or 
deleted from the 
volume │
│                 │                 │ during the last volume 
space 
management. │
│                 │                 │ Tracks are not 
applicable for level 
0    │
│                 │                 │ volumes and are 
excluded with 
asterisks  │
│                 │                 │ (*). Both fields are 
only applicable 
for │
│                 │                 │ the last VOLUME 
request, not for a 
LEVEL │
│                 │                 │ request like secondary 
space 
management. │
├─────────────────┼─────────────────┼───────────────────────────────────────
───

so it's got nowt to do with how many Migrated Datasets are on the volume. 
That's what's been throwing me. many thanks for that. 

As for SSM not working, I've just looked at the AUTOMIG defs for our DASD 
SG's and find that 18 out of 21 are set to NO, 2 of the remaining 3 have 
99% free space (I said it's a datamover so wouldn't expect much HSM 
activity) and the other has a low threshold of 50%.

VTOC's and MCDS both low. 

Final question......Surely SSM has to start/end to take care of deleting 
expired data sets from the migration volumes, deleting obsolete MCDs, VSRs, 
and DSRs during migration cleanup even if it has nothing to shift to ML2?

I have to assume we have such small migration activity that nothing needs 
deleting/cleaning? 

Many thanks to all who contributed and sorry for misleading anyone I 
mislead.

Until the next time (which probably won't be long),

Joe

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