HI @sadaat mahar ,
For Azure VMs you can refer to the official Microsoft documentation below:
Scalability and performance targets for VM disks on Windows
https://learn.microsoft.com/en-us/azure/virtual-machines/windows/disk-scalability-targets
For Hyper-V virtual machines, you can refer to the official documetation here:
Plan for Hyper-V scalability in Windows Server 2016 and Windows Server 2019
https://learn.microsoft.com/en-us/windows-server/virtualization/hyper-v/plan/plan-hyper-v-scalability-in-windows-server
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Best regards,
Leon