Hobart 12m:
Disk VSN: HOB+1011
Data volume at beginning: 9193 GB
Katherine 12m:
Disk VSN: HOB+0124
Data volume at beginning: 12406 GB
Yarragadee 12m:
Disk VSN: HOB+0130 (changed to HOB+0102 part way through, details below)
Data volume at beginning: 0 GB (missing 6 GB)