Hi,
Please refer to:
How to Install the Operations Manager Reporting Server
https://technet.microsoft.com/en-us/library/hh298611.aspx?f=255&MSPPError=-2147217396
How To: Install System Center 2012 Operations Manager Reporting Server
http://1staff.com/Blog/post/2012/11/05/How-to-Install-Operations-Manager-Reporting-Server.aspx
Hi There,
Please note SQL Clustered reporting is not supported by SCOM.
If it is a stand alone reporting instance then the installation is supported. Refer the below to do it.
https://techstronghold.com/blogs/cloud/building-microsoft-system-center-cloud-scom-2012-r2-operations-manager-2012-r2-reporting-service-installation
More info:
OpsMgr 2012: a quickstart deployment guide