An architect is designing a monitoring solution for a VMware SDDC, using vRealize OperationsManager (vROps).

Continuous Availability (CA) is a feature of vROps that separates the analytics cluster into two fault domains, stretching across vSphere clusters, and protects the analytics cluster against the loss of an entire fault domain. CA requires a witness node to be deployed in the cluster, which acts as a tiebreaker in case of a network partition between the two fault domains. CA ensures that the data stored in the primary node and data nodes in one fault domain is always 100% synced to the replica node and data nodes in the other fault domain. CA is not a disaster recovery solution, but it provides a higher level of availability and data protection than High Availability (HA), which only protects against the loss of a single node. HA creates a replica for the primary node, but does not replicate the data nodes. Therefore, if a whole rack fails, HA may not be able to prevent data loss. Deploying an additional vROps deployment as a standby or configuring remote collector groups are not options that address the requirement of ensuring no monitoring data is lost in the event of a whole rack failure. These options may provide some redundancy or scalability, but they do not guarantee data consistency or availability across fault domains. References: 1: About vRealize Operations Continuous Availability 2: Continuous Availability Considerations 3: About vRealize Operations High Availability 4: High Availability Considerations