Site awareness

You can associate a location with each storage system and each site in a session. This site awareness ensures that only the volumes whose location matches the location of the site are allowed for selection when you add copy sets to the session. This prevents a session relationship from being established in the wrong direction.

Copy Services Manager does not perform automatic discovery of locations. Locations are user-defined and specified manually.

You can change the location associated with a storage system that has been added to the Copy Services Manager configuration. You can choose an existing location or add a new one. Locations are deleted when there is no longer a storage system with an association to that location.

When adding a copy set to a session, a list of candidate storage systems is presented, organized by location. Storage systems that do not have a location are displayed and available for use when you create a copy set.

You can also change the location for any site in a session. Changing the location of a session does not affect the location of the storage systems that are in the session.

Changing the location of a storage system might have consequences. When a session has a volume role with a location that is linked to the location of the storage system, changing the location of the storage system could change the session's volume role location. For example, if there is one storage system with the location of A_Location and a session with the location of A_Location for its H1 role, changing the location of the storage system to a different location, such as B_Location, also changes the session's H1 location to Site 1. However, if there is a second storage system that has the location of A_Location, the session's role location is not changed.