This post is the answer to one of the FAQs found in
License Tips for IBM Data Replication .
The absolute best answer to this question is in the IBM Distributed Software Licensing Reference Guide. It can be downloaded from the Passport Advantage Licensing home page on ibm.com (see picture below). The document contains a general discussion about Hot, Warm, and Cold Standbys for IBM distributed software. While it does not mention IBM InfoSphere Data Replication (IIDR) specifically, the discussion applies to IIDR because IIDR does not have its own unique license terms in regards to standby servers. If you read the guide and have a question in relation to IIDR, feel free to post it in the comment section of this blog entry.
The following is an excerpt from that document as of the date of this post. It's just here just to give you a feel for what to look for in the Reference Guide. You shouldn't view this post as a replacement for reading the Guide since the Guide could change .