VMWARE ESXI 6.7 TURN OFF STORAGE VMOTION UPDATE
Please be advised that the multi-writer feature must not be used for a clustered disk resource for WSFC.īoth VMware Cloud on AWS and VMware vSAN (6.7 Update 3) support clustered VMDK(s) as a disk resource for WSFC.
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Note: You might see references on the Internet suggesting using the multi-writer feature in conjunction with WSFC. Check the information below for more details. Live vMotion (both user- or DRS-initiated) of VMs hosting nodes of WFCS is supported starting with vSphere 6.0 and, among others, requires the VM Compatibility (vHardware) to be at least vSphere 6.0 (version 11). Note: vSphere 7.0 provides support for clustered VMDK. The figure below depicts the recommended VM level configuration of a disk resource and vController (using vSphere HTML5 Client). All disks should be using the same SCSI IDs across all VMs hosting nodes of WSFC. SCSI commands must be directly passed to a LUN to satisfy the requirements of SCSI-3 Persistent Reservations, which justifies the usage of RDMs in physical compatibility mode. A non-formatted LUN should be made available to the vSphere environment and further assigned as an RDM or vVol device to a VM, node of WSFC. We support only Fibre Channel, iSCSI or Fibre Channel over Ethernet (FCoE) as the access storage protocols file-based storage systems with NFS are not supported. The requirement to use physical Bus Sharing is due to SCSI-3 Persistent Reservations used by Microsoft OS to arbitrate an access to a disk shared between nodes.īlock storage must be used to provision a clustered disk for WSFC. A SCSI controller used for a clustered disk must be configured with the SCSI Bus Sharing set to physical. We recommend attaching a disk to be used as a shared resource to a separate vSCSI controller(s) - consider using the PVSCSI Controller Type with vSphere 6.x and 7.0. NOTE: We are replacing references to “shared disk” with “clustered disk” to reduce confusion and provide more clarity. The recommended and supported vSphere configuration options for a CAB deployment of a WSFC are shown in the table below: vSphere version We will concentrate on the clustered disk option provided by a Raw Device Mapping (RDM) and will discuss configurations involving VMware Virtual Volumes (VVol) in a separate blog post. The CIB solution should not be used for any production implementations – if a single ESXi host will fail, all cluster nodes will be powered off and, as a result, an application will experience downtime. We do not recommend a configuration where all VMs hosting nodes of a cluster are placed on a single ESXi host (so called “cluster-in-a-box”, or CIB). CAB provides high availability (HA) both from the In-guest Operating System (OS) and vSphere environment perspective.
The information provided is applicable to VMware vSphere versions 6.x and 7.x in configurations when the VMs hosting the nodes of a WSFC cluster are located on different ESXi hosts – known as “Cluster-across-box (CAB)” in VMware official documentation. Note: Microsoft SQL Server Always On Availability Group does not require clustered disks between VMs to host a database and therefor no special disk configurations on the vSphere side are needed. One of the application examples leveraging a WSFC with clustered disks is Microsoft SQL Server configured with Always On Failover Cluster Instance (FCI). In this blog post you will learn about VMware supported and recommended configuration options when implementing a WSFC (previously known as Microsoft Service Cluster Service, or MSCS) with disk resources shared across nodes of a cluster.
VMWARE ESXI 6.7 TURN OFF STORAGE VMOTION HOW TO
There’s a lot of conflicting materials on the Internet describing how to configure a Windows Failover Cluster (WSFC) on VMware vSphere platform. UPDATE 1: Starting with VMware vSAN 6.7 U3 vSAN provides native support for a clustered disk resource for WSFC! Check this article for more information how to configure vSAN for shared disk. UPDATE 2: VMware vSphere 7.0 now supports shared (clustered) VMDK! A VMDK can be used as a shared disk resource for a WSFC deployed on a VMs hosting on different ESXi hosts (CaB).
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