Is MSA volume presented to VM as raw device through RDM?
If the MSA volume presented as datastore in ESX then you can check if unmap need to initiate to reclaim back space the VMFS filesystem level
1st thing you need to change at the MSA is base. Please change this from base 10 to base 2 and then compare it with Host.
Your issue seems at the Host and not at the MSA end.
Hope this helps!
Regards
Subhajit
I am an HPE employee
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