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--- title: Support matrix for shared disks in Azure VM disaster recovery ms.reviewer: v-gajeronika description: This article summarizes the scenarios that shared disk in Azure Site Recovery supports for each workload type. ms.topic: article ms.date: 09/11/2026 ms.service: azure-site-recovery author: Jeronika-MS ms.author: v-gajeronika ms.custom: engagement-fy23, references_regions, linux-related-content # Customer intent: As a cloud architect, I want to understand the support matrix for shared disks in Azure Site Recovery, so that I can effectively plan and implement disaster recovery strategies for my virtual machine workloads. --- # Support matrix for Azure Site Recovery shared disks This article summarizes the scenarios that shared disk in Azure Site Recovery supports for each workload type. ## Supported scenarios The following table lists the supported scenarios for shared disk in Azure Site Recovery: | Scenarios | Supported workloads | | --- | --- | | Azure to Azure disaster recovery | Supported for Regional/Zonal disaster recovery - Azure to Azure | | Platform | Windows virtual machines | | Server SKU | Windows 2016 and later | | Clustering configuration | Active-Passive | | Clustering solution | Windows Server Failover Clustering (WSFC) | | Shared disk type | Standard SSD, Premium SSD, Premium SSD v2 and Ultra disks | | Disk partitioning type | Basic | | Maximum cluster nodes | Four | | Recovery points | Crash-consistent only | | Protected disk topology | The same shared-disk set must be attached to every protected node | ## Unsupported scenarios Following are the unsupported scenarios for shared disk in Azure Site Recovery: - Active-Active clusters - Linux and Pacemaker clusters - Protecting multiple clusters as a group - Protecting cluster + non-clustered virtual machines in a group - Recovery plans - Application-consistent recovery points - Adding a shared disk to an already protected cluster. Disable and re-enable protection for the complete cluster configuration. - Non-clustered distributed appliances without using WSFC - Configuring replication for Azure virtual machines that are attached to different shared disks within a single cluster. To protect a cluster in Azure Site Recovery, you must attach the same set of shared disks to all the virtual machines you're protecting in that cluster. ## Disaster recovery support The following table lists the disaster recovery support for shared disk in Azure Site Recovery: | Disaster recovery support | Source disk redundancy | Site Recovery behavior | Target disk redundancy | | --- | --- | --- | --- | | Zonal disaster recovery | ZRS | Not supported | Not applicable | | Zonal disaster recovery | LRS | Supported | LRS | | Regional disaster recovery | ZRS | Supported | ZRS | | Regional disaster recovery | LRS | Supported | LRS, or ZRS for Standard SSD and Premium SSD v1 when available | Premium SSD v2 and Ultra Disk support LRS only. ## Next steps Learn about [setting up disaster recovery for Azure virtual machines using shared disk](./tutorial-shared-disk.md).