Chapter 11. Advanced Copy Services 541
When the relationship or Consistency Group becomes connected again, the relationship or 
Consistency Group becomes ConsistentSynchronized only if this action does not lead to a 
loss of consistency. The following conditions must be true:
/SM590000The relationship was ConsistentSynchronized when it became disconnected.
/SM590000No writes received successful completion at the master while disconnected.
Otherwise, the relationship becomes ConsistentStopped. The FreezeTime setting is retained.
Empty
This state applies only to Consistency Groups. It is the state of a Consistency Group that has 
no relationships and no other state information to show.
It is entered when a Consistency Group is first created. It is exited when the first relationship 
is added to the Consistency Group, at which point the state of the relationship becomes the 
state of the Consistency Group.
11.7  Remote Copy commands
This section presents commands that need to be issued to create and operate remote copy 
services.
11.7.1  Remote Copy process
The MM/GM process includes the following steps:
1. A system partnership is created betwee n two IBM Spectrum Virtualize systems (for 
intercluster MM/GM).
2. A MM/GM relationship is created between two volumes of the same size.
3. To manage multiple MM/GM relationships as one entity, the relationships can be made 
part of a MM/GM Consistency Group to ensure data consistency across multiple MM/GM 
relationships, or for ease of management.
4. The MM/GM relationship is started. When the background copy completes, the 
relationship is consistent and synchronized. When synchronized, the auxiliary volume 
holds a copy of the production data at the master that can be used for disaster recovery.
5. To access the auxiliary volume, the MM/GM relationship must be stopped with the access 
option enabled before write I/O is submitted to the auxiliary.
Following these steps, the remote host server is mapped to the auxiliary volume and the disk 
is available for I/O.
For more information about MM/GM commands, see IBM System Storage SAN Volume 
Controller and IBM Storwize V7000 Command-Line Interface User’s Guide, GC27-2287.
The command set for MM/GM contains the following broad groups:
/SM590000Commands to create, delete, and manipulate relationships and Consistency Groups
/SM590000Commands to cause state changes
If a configuration command affects more than one system, MM/GM coordinates configuration 
activity between the systems. Certain configuration commands can be performed only when 
the systems are connected, and fail with no effect when they are disconnected.