Azure Site Recovery replication for Azure-to-Azure scenarios supports standard-security VMs (VM1, VM2) as well as trusted launch virtual machines running Windows Server, a capability that is generally available and documented specifically for Azure-to-Azure replication, which covers VM3. Confidential VMs such as VM4, however, rely on hardware-bound (vTPM/attestation-tied) OS disk encryption keys that are not part of Azure Site Recovery ' s supported replication scenarios, so a VM configured with the Confidential security type cannot currently be replicated using Azure Site Recovery. The Windows Server 2025 Datacenter: Azure Edition operating system itself is fully supported and is not the limiting factor for any of the four VMs; the security type of VM4 is what excludes it. If VM4 must still be protected for disaster recovery, an alternative such as Azure Backup for VM-level snapshots, or a guest-level replication tool that operates independently of the confidential computing attestation boundary, would need to be considered instead of Azure Site Recovery.