Thanks for providing the outputs.
Are you not able to create new Virtual Disk Group with all 8 SAS drives ? at the time of VDG creation you need to select Pool A where you want to associate this new VDG.
After that you can create SSD Read-cache VDG with the available SSD drive and associate it with Pool A
If you are getting any error then please share the screenshot.
Hope this helps!
Regards
Subhajit
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