Warning: One or more of the selected volumes is already mapped to a server or remote system.
Mapping a volume more than once may cause data corruption or unpredictable results.
Therefore, the mapping of a volume to a secondary server is only allowed on an individual volume basis.
If you are attempting to map volumes to a secondary server in order to accomodate server clustering,
you should instead create a Server Cluster, and then map volumes directly to the cluster.