Which component is required to be deployed on the on-premises server CorpAcct for Azure Site Recovery?

The required component to be deployed on the on-premises server for Azure Site Recovery is the Azure Site Recovery Mobility Service. This service is essential for replicating virtual machines, as it allows the on-premises server to communicate with Azure. It ensures that data is continuously synchronized between the on-premises environment and the Azure cloud, enabling seamless failover and recovery in the event of a disaster.

When deployed on the on-premises server, the Mobility Service captures changes to the virtual machines and sends that data to Azure, where it can be stored for recovery processes. This service plays a crucial role in maintaining the integrity and availability of the data being replicated, making it a key component for disaster recovery plans.

The other components listed serve different purposes. For instance, the Azure Site Recovery configuration server is responsible for managing and orchestrating the replication process, but it does not handle the actual data transfer. Similarly, the Azure Backup agent is used for backup solutions rather than replication, and Virtual Machine Manager is primarily involved in managing and deploying virtual machines, not specifically in the context of Azure Site Recovery.