With DP, if you are looking to perform catalyst store replication with a foreign cell manager, beware of an error during copy specification creation.
ok, so you have created your storeonce catalyst stores on each local and remote D2Ds
you now want to create a replication object copy specification....
When creating, under the option part, you tick "USE REPLICATION"
this error can appear:
"DIFFERENT MEDIA TYPES ARE NOT SUPPORTED"
this will cause you many hours of wondering why this error appears. Device types are fine and configuration looks good.
After a while of troubleshooting and debug log checking the issue is due to the fact that the primary catalyst store has not taken a backup yet so there is no media in the store. If you do a backup and you have protected media in the store/media pool, the above error goes away and replication works.
Another spurious error to throw you off track!
DP version 9.06 sees this issue. Not sure if its known or fixed in later patches.