Puredisk server Catalog restore

So let's say I have a local master server "master1" and a local media server "media1" and a remote media server (DR) "remotemedia1". 

I currently have both "media1" and "remotemedia1" set up as puredisk server with MSDP. 

So when I do catalog backup, I have my 1st copy backup to "media1" then duplicate to "remotemedia1". 

 

Now, let's say my local environment has been completely destroyed - so we need a DR ! 

** 1st thing I do is def rebuilding my master server. Now I will have to connect "master1" to "remotemedia1" .... since master1 is newly rebuilt, the previous relationship was broken. Does anyone know how I can reestablish this so I can do Catalog restore from the puredisk pool of remotemedia1? 

Any reference is appreciated. thanks!!