DB2 Express-C License Question   

I have read IBM's articles involving licensing and the versions of DB2:

http://www.ibm.com/developerworks/data/library/techarticle/dm-0909db2halicensing
http://www.ibm.com/developerworks/data/library/techarticle/dm-0909db2compare/

Thinking about having 2 servers (Express-C, unless this is a license issue) one is active and sending it logs to a Standby Server which is applying the logs every 15 minutes or so (the instance is started, thus making it "warm". I know HADR is not part of the Express-C licensing and understand that if we use any other kind of outside software that is not allowed either. Here is the snippet from the compare article...

You cannot use HA clustering software of any kind to cluster DB2 Express-C servers for HA. For example, availability clustering through Microsoft Clustering Services, SteeleEye, or even the built-in DB2 HA clustering facilities are not allowed with DB2 Express-C.

Is having the standby machine with an instance started and applying logs considered part of the "built-in DB2 HA clustering facilities"? I am not sure if that definition is limited to only separate add on products/editions such as HADR, DB2 pureScale, etc. Clearly applying logs actively on the standby does reduce the MTTR.

My read is that this is not allowed with Express-C since it would be warm, but I didn't see where this was specifically addressed other than being classified as warm. With non DB2 Express-C it is clear you would need to license any warm standby as shown in Firgure 1 & Figure 2 in the HA licensing article.

Any help on this would be appreciated.

Thanks!