Use "Computer Management" to control Hyper-V Server

If you want to use "Computer Management" to control your Hyper-V Server:

You may received following warning message "Computer xxx cannot be managed. ...":

You need to enable couple Firewall rules:
1. Open "Windows PowerShell".

2. Enable Firewall rules.
    "Enable-NetFirewallRule -DisplayGroup "Remote Event Log Management"
    "Enable-NetFirewallRule -DisplayGroup "Windows Firewall Remote Management"
    "Enable-NetFirewallRule -DisplayGroup "Remote Volume Management"

3. If need to remote control Disk Management, need to enable host Firewall rules.

4. Enable Firewall rules.

5. Now you can see your Hyper-V Server's disks.