Merge pull request #314653 from AkshitGureja/Windows-NVMe-ASR

ASR update for Windows NVMe support

Author: Stacyrch140

articles/site-recovery/azure-to-azure-how-to-enable-replication.md

@@ -48,6 +48,9 @@ Use the following procedure to replicate Azure VMs to another Azure region. As a
 1. In **Replication settings**, you can configure the following settings:
     1. Under **Location and Resource group**,
        - **Target location**: Select the location where your source virtual machine data must be replicated. Depending on the location of selected machines, Site Recovery provides you with the list of suitable target regions. We recommend that you keep the target location the same as the Recovery Services vault location.
+         >[!NOTE]
+         >If the selected target region doesn't support an NVMe-capable VM SKU (preview), Azure Site Recovery blocks the enable replication action and displays a validation error before replication starts.
+         >
        - **Target subscription**: Select the target subscription used for disaster recovery. By default, the target subscription will be same as the source subscription.
        - **Target resource group**: Select the resource group to which all your replicated virtual machines belong.
            - By default, Site Recovery creates a new resource group in the target region with an *asr* suffix in the name.
@@ -108,6 +111,9 @@ Use the following procedure to replicate Azure VMs to another Azure region. As a
 
 1.  After the VMs are enabled for replication, you can check the status of VM health under **Replicated items**. The time taken for initial replication depends on various factors such as the disk size, used storage on the disks, etc. Data transfer happens at ~23% of the disk throughput. Initial replication creates a snapshot of the disk and transfers that snapshot.
 
+>[!TIP]
+>In scenarios where you successfully migrate the disk controller from SCSI to NVMe (preview) after replication, Azure Site Recovery automatically detects the controller update and continues replication without interruption. New recovery points reflect the updated NVMe disk controller type. 
+
 ### Enable replication for added disks
 
 If you add disks to an Azure VM for which replication is enabled, the following occurs:

articles/site-recovery/azure-to-azure-support-matrix.md

@@ -2,7 +2,7 @@
 title: Support Matrix for Azure VM Disaster Recovery with Azure Site Recovery
 description: Summarizes support for Azure VMs disaster recovery to a secondary region with Azure Site Recovery.
 ms.topic: concept-article
-ms.date: 02/27/2026
+ms.date: 04/14/2026
 ms.service: azure-site-recovery
 author: Jeronika-MS
 ms.author: v-gajeronika
@@ -402,7 +402,8 @@ Standard SSD | Supported. |
 Redundancy | Locally redundant storage (LRS), ZRS, and geo-redundant storage (GRS) are supported.
 Cool and hot storage | Not supported. | VM disks aren't supported on cool or hot storage.
 Storage Spaces | Supported. |
-NVMe storage interface | Not supported.
+NVMe storage interface (preview) | Supported | Supported for Azure-to-Azure for Windows for Gen2 VMs such as Da/Ea/Fa v6-series, Ebsv5/Ebdsv5, and others that use NVMe interface. Ephemeral OS disks and local NVMe disks aren't supported. |
+Mixed controller VMs (SCSI + NVMe) | Not Supported | VMs SKUs such as Lsv3 aren't supported |
 Encryption at host | Not supported. | The VM is protected, but the failed-over VM doesn't have encryption at host enabled. For more information, see [Enable end-to-end encryption by using encryption at host](/Azure/virtual-machines/disks-enable-host-based-encryption-portal).
 Encryption at rest (SSE) | Supported. | SSE is the default setting on storage accounts.
 Encryption at rest (CMK) | Supported. | Both software and hardware security module (HSM) keys are supported for managed disks.
@@ -426,7 +427,6 @@ Cool and hot storage | Not supported. | VM disks aren't supported on cool or hot
 Azure Storage firewalls for virtual networks | Supported. | If you want to restrict virtual network access to storage accounts, enable [Allow trusted Microsoft services](../storage/common/storage-network-security.md#exceptions).
 General-purpose V2 storage accounts (hot and cool tiers) | Supported. | Transaction costs increase substantially compared to general-purpose V1 storage accounts.
 Generation 2 (UEFI boot) | Supported.
-NVMe disks | Not supported.
 Managed shared disk| Supported. |
 Managed Premium SSD v2| Supported. | Since block blob storage accounts aren't supported in China North and China East regions, Site Recovery for Premium SSD v2 disks can't be supported. 
 Ultra Disks | Supported. | Zonal Disaster Recovery isn't supported. Since block blob storage accounts aren't supported in China North and China East regions, Site Recovery for Ultra Disks can't be supported.

articles/site-recovery/feature-updates-whats-new.md

@@ -5,7 +5,7 @@ ms.topic: concept-article
 ms.author: v-gajeronika
 ms.service: azure-site-recovery
 author: Jeronika-MS
-ms.date: 06/13/2025
+ms.date: 04/14/2026
 # Customer intent: "As a disaster recovery manager, I want to stay informed about the latest updates in Azure Site Recovery features, so that I can ensure optimal protection and monitoring of our critical workloads."
 ---
 
@@ -15,6 +15,12 @@ The Azure Site Recovery service is updated and improved on an ongoing basis. To
 
 You can follow and subscribe to Site Recovery update notifications in the [Azure updates channel](https://azure.microsoft.com/updates/?product=site-recovery).
 
+## Updates (April 2026)
+
+### Azure Site Recovery support for Windows Azure VMs with NVMe disk controllers (Preview)
+
+Azure Site Recovery now supports replication and disaster recovery for Windows Azure Virtual Machines running on NVMe-enabled Generation 2 VM families, such as the Da/Ea/Fa v6-series and Ebsv5/Ebdsv5 in the Azure-to-Azure scenario. This enhancement allows you to enable disaster recovery for your Azure VMs running high performance, I/O-intensive workloads (subject to ASR churn support) with the NVMe disk controller. This capability is supported across all Azure public cloud regions. [Learn more](azure-to-azure-support-matrix.md).
+
 ## Updates (June 2025)
 
 ### Azure Site Recovery for Virtual Machines with Premium SSD v2 disks
@@ -120,4 +126,4 @@ Backup center supports Azure virtual machine, VMware, and Physical machine scena
 
 ## Next steps
 
-Keep up-to-date with our updates on the [Azure Updates](https://azure.microsoft.com/updates/?product=site-recovery) page.
+Keep up-to-date with our updates on the [Azure Updates](https://azure.microsoft.com/updates/?product=site-recovery) page.