following is my Hyper-v Host configuration.
Hyper-V host running on SSD M.2 and all my VM VHDX files sitting on local drives (4 x 600 GB Hard Drive - SAS 15K - 3.5" Drives in Riad 5).
I have Two Guest VM's (DC & file server).
I have configured a separate hard disk VHDX (1TB DYnamic) for DATA and attached to my file server.
Then I started transferring my old file server files to new File server DATA Disk.
While transferring data I couldn't access the new file server. The server was in the hung state. But i cold access my other VM which is DC without any issue.
Did the following tuning on Hyper-v setting
Disable VMQ/Enable Jumbo Frame/Disable IPV6
Separate NIC for Management OS and Team NIC for VM's