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Copy file name to clipboardExpand all lines: WindowsServerDocs/failover-clustering/failover-cluster-csvs.md
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@@ -15,16 +15,6 @@ CSV offers a clustered file system that operates on top of NTFS or ReFS. Typical
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- Clustered virtual hard disk (VHD/VHDX) files for a clustered Hyper-V virtual machine (VM).
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- Scale-out file shares to store application data for the Scale-Out File Server clustered role. Examples of the application data for this role include Hyper-V VM files and Microsoft SQL Server data. ReFS isn't supported for a Scale-Out File Server in Windows Server 2012 R2 and previous releases. For more information about Scale-Out File Server, see [Scale-Out File Server for Application Data](sofs-overview.md).
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- Microsoft SQL Server 2014 (or higher) Failover Cluster Instance (FCI). CSVs don't support the Microsoft SQL Server clustered workload in SQL Server 2012 and earlier versions of SQL Server.
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- Windows Server 2019 or higher Microsoft Distributed Transaction Control (MSDTC).
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In later releases of Windows Server, CSV functionality is enhanced. For example, dependencies on Active Directory Domain Services (AD DS) were removed. Support was added for the functional improvements in `chkdsk` for interoperability with antivirus and backup applications, and for integration with general storage features such as BitLocker-encrypted volumes and Storage Spaces. For an overview of CSV functionality that was introduced in Windows Server 2012, see [What's New in Failover Clustering in Windows Server 2012](/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/dn265972(v%3dws.11)).
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Windows Server 2012 R2 introduced additional functionality, such as:
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- Distributed CSV ownership with improved diagnosability
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- Increased resiliency through availability of the Server service
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- Enhanced interoperability that includes support for ReFS and deduplication.
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- Scale-out file shares to store application data for the Scale-Out File Server clustered role. Examples of the application data for this role include Hyper-V VM files and Microsoft SQL Server data. ReFS isn't supported for a Scale-Out File Server in Windows Server 2012 R2 and previous releases. For more information about Scale-Out File Server, see [Scale-Out File Server for Application Data](sofs-overview.md).
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- Microsoft SQL Server 2014 (or higher) Failover Cluster Instance (FCI). CSVs don't support the Microsoft SQL Server clustered workload in SQL Server 2012 and earlier versions of SQL Server.
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- Windows Server 2019 or higher Microsoft Distributed Transaction Control (MSDTC).
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To learn more about CSV functionality introduced in previous versions, see [What's New in Failover Clustering in Windows Server 2012](/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/dn265972(v%3dws.11)).
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For information about using data deduplication on CSVs for Virtual Desktop Infrastructure (VDI) scenarios, see blog posts [Deploying Data Deduplication for VDI storage in Windows Server 2012 R2](https://techcommunity.microsoft.com/t5/storage-at-microsoft/deploying-data-deduplication-for-vdi-storage-in-windows-server/ba-p/424777) and [Extending Data Deduplication to new workloads in Windows Server 2012 R2](https://techcommunity.microsoft.com/t5/storage-at-microsoft/extending-data-deduplication-to-new-workloads-in-windows-server/ba-p/424787).
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## Requirements and considerations for using CSV in a failover cluster
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