To enable SSH on vSphere 4i is always important and helpful when you require to troubleshoot any problem. The way to get this done should similar as esx 3i
1. First, you press Alt + F1 then type unsupported and press enter
2. You will see the prompt for password after this. Key in the root password you had previously configure, and you will be able to log in to the service console
3. Follow by that, do a vi /etc/inetd.conf and look for #ssh. Remove the # and save the file after this
4.Go to /sbin, and run this command ./services.sh restart