Instead of using MSI to create SCOM databases, you have the option to use DBCreateWizard.exe which can be found in the SupportTools folder. DBCreateWizard also gives the option to create the databases remotely when using command line like shown below:
OPERATIONS MANAGER DATABASE
DBCreateWizard.exe DBType:"Operations Manager Database" SQLInstance:<SQLinstance> DBName:<SQLdbName> ManagementGroup:<ManagementGroup> UserGroup:<AD_AdminGroup> DBCreate DBSize:<SQLDBsize> DBPath:<SQLdataPath> LOGPath:<SQLlogPath>
OPERATIONS MANAGER DATA WAREHOUSE DATABASE
DBCreateWizard.exe DBType:"Operations Manager Data Warehouse Database" SQLInstance:<SQLinstance> DBName:<SQLdbName> DBCreate DBSize:<SQLDBsize> DBPath:<SQLdataPath> LOGPath:<SQLlogPath>
DBCreateWizard.exe creates a log file starting with dbCreateWiz in the temp folder.
If DBCreateWizard.exe is started without command line parameters the GUI will show.
NOTE: It is not possible to create databases remote from the GUI!
