While the IO Filters capture data for replication, they do not communicate directly with the object store. The DRVA is a virtual appliance that maintains the replication log store and manages the transfer of the VMs and their data to the object store. The DRVA also manages functions such as in-line compression and garbage collection. There must be at least one DRVA per protected cluster, and there can be up to one DRVA per host. DRVAs are deployed as part of the JetStream DR configuration process.
