Please find the below answers.
- In DNS record, which IP I should register with floating hostname. 1G or 10G ?
You can register the floating CommServe name with the IP address of 10G.
- Do I need to register commserve Physical Hostnames as well in the DNS for commserve failover package & SQL agent. If yes , which IP I should use.
There is no need to register the CommServe physical host names in the DNS.
- As per Below link, I did not understand which hostname are they : Production_CS_Failover_Instance & Standby_CS_Failover_Instance. Any IP needs to associate with this name ?
During the installation, user need to enter the Host Name displayed in Client Computer Information , which should be the physical host name of the corresponding machines. No need to associate any IP with it.
Please note that there is another section for entering the CommServe Host Name displayed in the CommServe Information, which should be the floating CommServe name.