Yes you can delete HyperV and Quorum volumes from SMU as you have highlighted.
You can also delete vdisk named dg01 but be careful because both vdisk name same which dg01. One from MSA1 and another one from MSA2. Please identify them with their serial numbers.
Vdisk expansion is not a good idea with 8 drives because that will take too much time. It may take 1 month or more than that also. In between if any drive failed or if for any reason you need to stop vdisk expansion for example performance issue then you can't do the same. Only option that time will be to delete the vdisk and recreate it. Please follow the best practice whitepaper as I have suggested earlier.
After vdisk expansion completed or delete/recreate then go for Volume expansion. Please refer page no 100 of SMU guide,
https://support.hpe.com/hpesc/public/docDisplay?docId=c04220794
Once Volume expansion done then you need to check that volume presented to which Host Operating System (OS) and accordingly you need to check if Filesystem expansion supported offline or online. Accordingly you need to expand Host OS filesystem as well. Take help from OS expert regarding the same.
Hope this helps!
Regards
Subhajit
I am an HPE employee
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