Highly available virtual machines in Hyper-V reside on highly available storage such as a cluster shared volume (CSV) and can only handle disks residing on this type of storage. Therefore, when Zerto replicates a virtual machine, the type of virtual machine created on the recovery site is determined by the type of storage designated for it.

When high availability is enabled, a copy of each cached object or region is maintained on a separate cache host. The cache cluster manages these copies and supplies them to the application if the primary copies are not available.

High availability is automatically disabled by Zerto Virtual Replication while updating recovered virtual machines in the recovery site from the VRA journal. After promotion of data from the journal to the recovered virtual machine completes, high availability is automatically re-enabled.