This is a known issue with SnapCenter 4.1.1/4.2 versions with Windows 2019 Server OS
Make sure you start the Microsoft ISCSI Initiator server service on the Plugin host.
TITLE: SnapCenter Server 4.1.1 reports Windows 2019 hosts as down or inaccessible with no plugins installed
DESCRIPTION: If SnapCenter Server 4.1.1 is installed on a Windows 2019 host, it will report that the host is down or inaccessible with no plugins installed. The overall status of the service is marked as Stopped.
WORKAROUND:
1. On SQL node/nodes:
- Open Windows Explorer
- Navigate to folder "<sc_install_drive>:\Program Files\NetApp\SnapCenter Plug-in for Microsoft Windows"
- Modify the file "SnapDriveService.exe.Config" and add the below line under <appsettings>:
<add key="usecmdletforinitiatordiscovery2019" value="false" />
2. Restart following services:
- "SnapCenter SMCore Service"
- "SnapCenter Plug-in for Windows Service"
3. From SnapCenter GUI refresh the assets:
- SnapCenter -> [Resources] -> [File Systems] -> [Refresh Resources]
- SnapCenter -> [Hosts] -> <mark host xxxx> -> [Refresh VM]
Same goes for