Are you able to connect to the ESXi host directly using vSphere client?
Are you able to ssh to the ESXi?
On ssh session, please run the command cd /vmfs/volumes and press enter.
If the ssh session hangs after pressing enter, hostd will be in no responding state.
Open a new ssh session and try rescanning by running the command esxcfg-rescan vmhba# where # is the number of the adapter.
