Multiple Azure Site Recovery Subscriptions
Unfortunately only one ASR subscription from one recovery vault is attachable into SCVMM. AS such, protected VMs can only be saved into a storage vault, that resides in the same datacenter as the recovery vault. In case of a global deployment, where SCVMM administrates hosts and VMs around the globe with appropriate site definitions, a failover would force users to connect to Azure VMs situated in another region as themselves. This situation also applies to the MARS agent around the globe replicating VMs to the same, single recovery/storage vault.