Do you have any production data inside the MSA?
Did you tried to full power cycle the MSA?
Do you have any additional drive enclosure attached with base enclosure or Controller enclosure? If so then just power on Controller enclosure by removing all drives half of each slot or bay
You can also try power on the MSA just by single controller and check. You can try to capture MSA logs and check the status of vdisk. If required log a case with HPE support based on the critical condition of the array.
Hope this helps!
Regards
Subhajit
I am an HPE employee
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