It is very easy, the best way is to refer to your GVD QSG docs, which comes with your NVR shipment.
There are about 10x steps to complete your RAID VD creation
Here is very important, make sure, you choose the right "Strip size" -->256k for your good IO performance.
For any M6 series, we recommend your shall create 4x VD.
After this RAID process, then you are ready to create GVD Storage Volume 😊
How long it will take to create the RAID 4x VD sets, 16x10TB storage for my NVR, M6016?