With VxRail version 4.7.300 or later, you can join an existing SSO domain during first run. This allows for two VCF on VxRail management WLDs to join the same SSO domain. This must be configured during the deployment of the second VCF instance. This allows for a single-pane-of-glass view for the management and workload domain vCenters at each site. Following are the important factors to consider:
Figure 41. Shared SSO Domain topology for two VCF Instances
There are some factors that must be considered when it comes to upgrading the PSCs in a VCF multi-instance shared SSO domain deployment. The system administrator must use caution when upgrading VCF instances that are part of the same SSO. The following guidelines must be considered before an upgrade of the VCF instances:
There are no safeguards that would prevent a user from upgrading one VCF instance that would break compatibility between the PSCs participating in the shared SSO domain.