![]() ![]() For example, we recommend that you disable iSCSI networks for cluster use to prevent CSV traffic on those networks. If the cluster nodes are connected to networks that should not be used by the cluster, you should disable them. To enable fault tolerance in the event of a network failure, we recommend that multiple cluster networks carry CSV traffic or that you configure teamed network adapters. Multiple networks and multiple network adapters. Network configuration considerationsĬonsider the following when you configure the networks that support CSV. Review requirements and considerations for using CSV in a failover clusterīefore using CSV in a failover cluster, review the network, storage, and other requirements and considerations in this section. For more information, see What's New in Failover Clustering.įor information about using data deduplication on CSV for Virtual Desktop Infrastructure (VDI) scenarios, see the blog posts Deploying Data Deduplication for VDI storage in Windows Server 2012 R2 and Extending Data Deduplication to new workloads in Windows Server 2012 R2. Windows Server 2012 R2 introduces additional functionality, such as distributed CSV ownership, increased resiliency through availability of the Server service, greater flexibility in the amount of physical memory that you can allocate to CSV cache, better diagnosability, and enhanced interoperability that includes support for ReFS and deduplication. ![]() For an overview of CSV functionality that was introduced in Windows Server 2012, see What's New in Failover Clustering in Windows Server 2012. 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 example, dependencies on Active Directory Domain Services were removed. In Windows Server 2012, CSV functionality was significantly enhanced. Windows Server 2019 or higher Microsoft Distributed Transaction Control (MSDTC)ĬSVs don't support the Microsoft SQL Server clustered workload in SQL Server 2012 and earlier versions of SQL Server.Microsoft SQL Server clustered workload in SQL Server 2012 and earlier versions of SQL Server do not support the use of CSV. Microsoft SQL Server 2014 (or higher) Failover Cluster Instance (FCI).For more information about Scale-Out File Server, see Scale-Out File Server for Application Data. Be aware that ReFS is not supported for a Scale-Out File Server in Windows Server 2012 R2 and below. Examples of the application data for this role include Hyper-V virtual machine files and Microsoft SQL Server data. Scale-out file shares to store application data for the Scale-Out File Server clustered role.Clustered virtual hard disk (VHD/VHDX) files for clustered Hyper-V virtual machines.CSV also help simplify the management of a potentially large number of LUNs in a failover cluster.ĬSV provides a general-purpose, clustered file system which is layered above NTFS or ReFS. With CSV, clustered roles can fail over quickly from one node to another node without requiring a change in drive ownership, or dismounting and remounting a volume. For more information, see About I/O synchronization and I/O redirection in CSV communication later in this document. The disk can be provisioned as Resilient File System (ReFS) however, the CSV drive will be in redirected mode meaning write access will be sent to the coordinator node. Applies to: Windows Server 2022, Windows Server 2019, Windows Server 2016, Windows Server 2012, Windows Server 2012 R2, Azure Stack HCI, versions 21H2 and 20H2Ĭluster Shared Volumes (CSV) enable multiple nodes in a Windows Server failover cluster or Azure Stack HCI to simultaneously have read-write access to the same LUN (disk) that is provisioned as an NTFS volume. ![]()
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