See 2.1 Products associated with Datareplicator and install all products that are required in order to use UNIX Datareplicator. You use Hitachi Program Product Installer to install UNIX Datareplicator.

You can install HiRDB before Datareplicator, or vice versa; however, you must install HiRDB on a server machine before you can specify the Datareplicator's environment variables on that server machine.