1&2. SAS RAID 5 on RSTe is never supported, and is not likely to be added. See Intel® RAID Quick Reference Guide.
3. Unfortunately no.
4. I don't think there is a big difference in performance between RSTe and ESRT2.
5. I don't think changing the server name would impact RWC2. RWC2 discovers servers by IP address.
Thanks for reply is there a way to install RWC2 in audit mode of Windows server (2008/2012/2012R2) where the admin account does not yet have a password?
I know that silent install is available using the command:
Setup.exe /s /v"/qn SETUPTYPE=<setuptype>
where setuptype may be StandAlone, Client or Server.
But I don't know if it will work or not before setting admin password.