Hi Atul
In Failover cluster management console, select the SAPGRP under that you may already define the server name, file server, disk drivers & other resources in that what is the server name? for your reference I have attached the sample screen shots
Image may be NSFW.
Clik here to view.
With the server name you can able to connect the virtual name. Or kindly paste the cluster management console with sapgrp
Thanks
Ram