Actions. From Site Recovery Manager perspective, there is no functional impact as all virtual machines are recovered successfully. vCLS is upgraded as part of vCenter Server upgrade. When there are 2 or more hosts - In a vSphere cluster where there is more than 1 host, and the host being considered for maintenance has running vCLS VMs, then vCLS VMs will. dispTopoRequest. vCLS is activated when you upgrade to vSphere 7. name}, in compute resource {computeResource. Not always but sometimes we tend to see an alarm on a VM "vSphere HA virtual machine failover failed". HomeLab Stage LXX: Power Consumption; HomeLab Stage LXIX: vSAN ESA; HomeLab Stage LXVIII: NSX-ALBA Test for HA. DRS does not place virtual machines for power-on or load balance virtual machines. What is the vCLS VM? The vCLS virtural machine is essentially an “appliance” or “service” VM that allows a vSphere cluster to remain functioning in the event that the vCenter Server becomes unavailable. . Regards, Sachin. vSphere HA virtual machine failover unsuccessful. HomeLab Stage LXX: Power Consumption; HomeLab Stage LXIX: vSAN ESA; HomeLab Stage LXVIII: NSX-ALBA Test for HA. I can check more tomorrow,, I may pwr down an ESXi host to see if the VMs move,,,The basic architecture for the vCLS control plane consists of maximum 3 virtual machines (VM), also referred to as system or agent VMs which are placed on separate hosts in a cluster. This monitor tracks the vCenter Alarm 'Migration Error'. vSphere HA completed a virtual machine failover on SRM test. Browse to the . In the vSphere 7. Using vSphere HA with Distributed Resource Scheduler (DRS) combines automatic failover with load balancing. A partition is extremely uncommon in normal. VMware HA is often used to improve reliability, decrease downtime in virtual environments and improve disaster recovery/business continuity. I got a 5. I have one VM on each ESXi host and when I try to initiate HA by shutting down. 免責事項： これは英文の記事 「vSphere HA virtual machine failover failed alarm (2064229)」の日本語訳です。記事はベストエフォートで翻訳を進めているため、ローカライズ化コンテンツは最新情報ではない可能性があります。最新情報は英語版の記事で参照してください。vSphere Clustered Services virtual machines are part of the DRS/HA functionalities since vSphere 7. A confirmation message is displayed: This operation consolidates all redundant redo logs on your virtual machine. Fault Tolerance requiere vSphere HA. The basis of the vSphere Admission control is the number of host failures that the cluster is allowed to tolerate and that continues to ensure failover. Veeam Backup & Replication powers on the VM replica. vSphere HA is resetting VM. Click Admission Control to display the configuration options. Moving any virtual machines to this host would violate a VM/VM DRS rule or VM/Host DRS rule. Right-click the cluster and click Settings. 1. Then we change the DRS. vSphere HA provides high availability for virtual machines by pooling the virtual machines and the hosts they reside on into a cluster. To avoid resetting virtual machines repeatedly for nontransient errors, by. These system VMs cannot be powered-off by users. I don't understand why. Select vSphere Availability and click Edit. 0 Kudos Troy_Clavell. The protected virtual machine is called the Primary VM. Once a host fails, another host will take over the services immediately and perform virtual machine failover. Hating to click each one to reset the alarm that wasn’t clearing I found the following solution. vSphere HA does not perform failovers. Procedure. vCenter Server is the service through which you manage multiple hosts connected in a network and pool host resources. HA would take action when the host is found failed and then restart the VMs on another available host, while the job of DRS is to balance the load of hosts and ensure the performance of VMs by migrating. Select the location for the virtual machine and click Next. x (81068). When I try to reconfigure HA on the host. " Those vm's are often automatically powerd-off/powered-on/restarted via. Troubleshooting vSphere HA Failure Response. vSAN uses its own logical network. Disabling and re-enabling the "vSphere HA virtual machine failover failed" alarm fixed the problem for me. bios. The challenge being that cluster services, like the vSphere Distributed Resource. again, this will have no impact on any running guest. Cannot migrate a virtual machine in a vSphere 5. This occurred for virtual machines (VMs) in a cluster with vSphere High Availability (HA) enabled. From the Type drop-down menu, select either Keep Virtual Machines Together (affinity) or Separate Virtual Machines (anti-affinity). vCLS is activated when you upgrade to vSphere 7. vSphere Cluster Services (vCLS) enhancements: With vSphere 7. vSphere HA will. With HA, vSphere can detect host failures and can restart virtual machines. This is expected behavior for vSAN clusters. vc. VmStateRevertedToSnapshot| The execution state of the virtual machine {vm. Select "ESXi 6. (Ignoring the warnings vCenter will trigger during the migration wizard). There is an issue with VMware high-availability protection for this virtual machine. By default, HA will not attempt to restart this virtual machine on another host. When there are 2 or more hosts - In a vSphere. 0 Update 1. vSphere HA virtual machine HA failover failed. this virtual machine to become vsphere HA protected and HA may not attempt to restart it after a failure. 0. Question #: 52. Confirm after 5 minutes it is no longer sending out alerts. One of them (say Host3) just exit Maintenance Mode. Avoid refreshing your web browser to ensure a successful network upgrade. I got a 5. Wait about 5 minutes for the vCLS VMs to be deleted. vSphere High Availability (HA) allows you to pool virtual machines and the hosts they reside on into a cluster. After a vCenter Server or ESXi host reboot, all encrypted VMs in the host might be in a locked state. 0 Update 3 or when you have a new vSphere 7. 0 Update 3 deployment. From the Select a Product drop-down menu, select VC and from the Select a Version drop-down menu, select 7. This occurred for a number of virtual machines on a particular ESXi host in a cluster with vSphere High Availability (HA) enabled. This. Select a number for the Host failures cluster tolerates. During a Site Recovery Manager workflow, post Test Recovery or Failover operations, some of recovered virtual machines might throw the following alarm: vSphere HA virtual machine failover failed. 0 are: For internationalization, compatibility, installation, upgrade, open source components and product support notices, see the VMware vSphere 7. Allowing. If the Witness node recovers from the failure, follow these steps. This host is reserved for HA failover capacity. vCenter High Availability (vCenter HA) protects vCenter Server against host and hardware failures. disconnected. Want to know what is in the current release of. vSphere FT requires a 10-Gbit network between ESXi hosts in the cluster,. Check the vSAN health service to confirm that the cluster is healthy. (The vCLS VMs) Your invalid ones are as such because. local that contains two virtual machines. The Witness node becomes unavailable while the Passive node is trying to assume the role. Issue: Системные виртуальные машины не выключаются. By default, this alarm is triggered by the following events:If the cluster is in a degraded state, events, alarms, and SNMP traps show errors. Table 4-2. To enable HA repeat the above steps and select Turn on VMware HA option. This is achieved by monitoring virtual machines and the hosts on which they run to automatically restart failed virtual machines on other vSphere hosts in case of a server failure and automatically restarting virtual machines in case of operating system failure. After the host is back online, the VM stays offline and gets not powered up again! Code: Select all vCLS-98b596cf-d0d2-4cac-a45d-f39bf856e762: vSphere HA virtual machine failover failed vSphere HA failover operation in progress in cluster Cluster1 in datacenter XXXXXX: 0 VMs being restarted, 1 VMs waiting for a retry, 0 VMs waiting for resources, 0 inaccessible vSAN VMs You can configure vSphere HA to designate specific hosts as the failover hosts. vCenter HA will need to be reconfigured. What you may check is whether the VM for which the alarm was triggered has VMware Tools installed (i. View the Advanced Runtime Info pane that appears in the vSphere HA section of the cluster's Monitor tab in the vSphere Web Client. vmwaredemo. After the host is back online, the VM stays offline and gets not powered up again!-Not enough resources to failover-Alarm HA VM failover changed from green to red - Virtual machine reloaded from new configuration [Mounted datastore]-Recovery Plan has begun recovering-Recovery Plan has finished recovering. 0 Update 1. EventEx] [info] [] [DC-xxxxx] [87492702] [vSphere HA failover operation in. For a. The vSphere Clustering Service (vCLS) is a new capability that is introduced in the vSphere 7 Update 1 release. EventEx] [info] [] [DC-xxxxx] [87492702] [vSphere HA failover operation in. This is solving a potential problem customers had with, for example, SAP HANA workloads that require dedicated sockets within the nodes. Select Show cluster entries in the dropdown. La configuración de Fault Tolerance en la entidad {entityName} tiene un problema: el host está inactivo. [1-1] [2023-05-11T16:27:44. 0. At the vCenter level select the Alarms tab, Edit the settings of the alarm, select the General tab, disabled/re-enable the alarm. 5, 6. vCenter Server 7 U2 Advanced Settings. We will see how virtual machines are recovered from a host that is failed. VMware HA provides a way to minimize virtual machine downtime in the event of a hypervisor (ESXi) host failure. vSphere HA provides high availability for virtual machines by pooling them and the hosts that they reside on into a cluster. Then select your vCenter Server and navigate to the vCenter Server Configure tab. Under DRS Automation, select a default automation level for DRS. We're running vCenter 7. 0 Release Notes. Resolution. Select the host on which to run the virtual machine and click Next. EventEx] [info] [] [DC-xxxxx] [87492702] [vSphere HA failover operation in. Before the first vCLS VM for the cluster is powered-on in a DRS enabled cluster, if users tries to. HA sometimes leaves VMs and hosts in inconsistent state. In rare cases, vCenter Server might lose track of virtual machine keys reference records on an ESXi host. Blog; HomeLab. Click vSphere HA located under Services. This occurred for virtual machines (VMs) in a cluster with vSphere High Availability (HA) enabled. A quorum of up to three vCLS agent virtual machines are required to run in a cluster, one agent virtual machine per host. We will simulate a host failure by powering it off. disable. 1 Solution. vSphere HA uses the management network only when vSAN is disabled. com) Opens a new window. In the event of a vSphere HA failover, you see messages similar to. 0 Availability. In the vSphere Client inventory, click the Configure tab. When this alert is triggered, it means that one or more virtual machines failed to get powered on by a host in a cluster protected by HA. This state is usually caused by a host that has been crashed. These solutions are typically deployed in environments where the distance between data centers is limited, often metropolitan or campus environments. Rebooting the VCSA will recreate these, but I’d also check your network storage since this is where they get created (any network LUN), if they are showing inaccessible, the storage they existed on isn’t available. Details. When I try to reconfigure HA on the host. When changing the value for "config. These system VMs cannot be powered-off by users. With the slot policy option, vSphere HA admission control ensures that a specified number of hosts can fail and sufficient resources remain in the cluster to fail over all the virtual machines from those hosts. I don't know why it's not working. Both communications and datastore heartbeating fail, and the vSphere High Availability (VMware HA) agent. Failed to start the virtual machine. If the Active node recovers from the failure, it becomes the Active node again. 0 Update 1 release VMware introduced a new service called the VMware vSphere Cluster Services (vCLS). Restarting VMs on different ESXi hosts is possible because the HA cluster has shared storage that maintains virtual machine disk (VMDK) files accessible to all the. " You may notice that cluster (s) in vCenter 7 display a message stating the health has degraded due to the unavailability of vSphere Cluster Service (vCLS) VMs. 7 virtual machine" to change the virtual hardware version to 14, and click on [Upgrade]. Blog; HomeLab. Take the virtual machine snapshot. If vCenter Server is hosted in the vSAN cluster, do not power off the vCenter Server VM or service VMs (such as DNS, Active. Under Advanced Settings, click the Edit Settings button. I got a 5. 03-29-2015 03:55 AM. Download and Installation. Select vSphere Availability in the Services section of the Configure page for your cluster. Deselect the Turn On vSphere HA option. this virtual machine to become vsphere HA protected and HA may not attempt to restart it after a failure. The host is marked as not responding. This is expected behavior for vSAN clusters. The vMotion threshold is too high. Then select your vCenter Server and navigate to the vCenter Server Configure tab. Not always but sometimes we tend to see an alarm on a VM "vSphere HA virtual machine failover failed". Search for events with vSphere HA in the description. If an ESXi host fails, vSphere HA attempts to restart its virtual machines on any of the specified failover ESXi hosts. The vCLS agent virtual machines (vCLS VMs) are created when you add hosts to clusters. After stretched cluster failover, VMs on the preferred site register alert: Failed to failover . VMs already on the preferred site might register the following alert: Failed to failover. 5. vSphere HA virtual machine failover unsuccessful. After you migrate all virtual machines from an ESX host within a short interval (about 10 seconds of each other),. When this alert is triggered, it means that one or more virtual machines failed to get powered on by a host in a cluster protected by HA. B. Review the event description for detail on the cause. 0 Update 2, the option to Disable acceleration under the VM Options tab of the Virtual Machine Edit Settings dialog is removed and not supported. vmx file and click OK. It’s first release provides the foundation to work towards creating a decoupled and distributed control plane for clustering services in vSphere. With vSphere 7 U1, VMware introduced vSphere Clustering Service (vCLS), which helps in a situation when vCenter Server becomes unavailable. After you dismiss the Cluster quickstart workflow, you cannot restore it for the current cluster. bios. I have no idea why. When the nodes are added to the cluster, the cluster will deploy a couple of vCLS virtual machines. This is accomplished by requiring that new virtual machines be powered on only if there is. The admission control policy allows you to configure reserved capacity in any one of three ways: • Host Failures Cluster Tolerates (default) • Percentage of Cluster Resources Reserved. Unselect Turn on vSphere HA, if it is selected. A dialog offers you the option to force a failover without synchronization. 0 Update 3, vSphere admins can configure vCLS virtual machines to run on specific datastores by configuring the vCLS VM datastore preference per cluster. Trigger conditions. Perform one of the following steps until the vSphere HA status for the cluster returns to normal and VMs can be turned on: Maintenance Mode - return the host into Maintenance Mode. Procedure. It offers detailed instructions, such as copying the cluster domain ID, adding configuration settings, and identifying vCLS VMs. The failover capacity of hosts can be defined in three different ways: Cluster resource PercentagevSphere HA initiated a failover action on 1 virtual machines in cluster %Cluster_Name% in datacenter %Datacenter_Name% No option to acknowledge, clear, or to see which machine was migrated. • Specify a Failover Host. vSphere HA will. Increased CPU or memory reserve of a virtual machine. Review the /var/log/fdm. 0 Update 1 (80472) (vmware. Run the following command. From vSphere client Home, select vCenter Inventory Lists > Resources > Clusters > storage cluster > Manage > Settings > > Services. Smaller failure domains and reduced data resynchronization. domain-c (number). vmx)VMware KB article #2056299 describes the detailed steps to recover from this situation. This is expected behavior for vSAN clusters. The agent VMs are not shown in the Hosts and Clusters overview in the vSphere Client. vSphere HA virtual machine failover failed alarm (2064229) Details This is one of a series of KB articles that provide information about. vSphere HA is resetting VM. On the VM there is a red event: vSphere HA virtual machine failover failed. With the release of vSphere Cluster Services (vCLS) in vSphere 7. GenericVmConfigFault Storage vMotion of a virtual machine fails at 30% to 44%. Add a new entry, config. 1 Solution Troy_Clavell Immortal 02-14-2012 11:51 AM are you running vCenter5 by any chance? If so, check your alarms. A vSphere Administrator sees the alarm: vSphere HA virtual machine failed to failover This occurred for a number of virtual machines on a particular ESXi host in a cluster with vSphere High Availability (HA) enabled. With dedicated failover hosts admission control, when a host fails, vSphere HA. In the failed state; storage vMotion the vCLS agent VM to a non-replicated datastore. On Host failure, NVDIMM PMem data cannot be recovered. D. When you add the first three hosts to the cluster, vSphere Cluster Services (vCLS) agent virtual machines are added by default to the cluster. 0 or later host. 11-15-2012 06:24 AM. vSphere DPM does not optimize power management by placing hosts into standby mode. vCLS under Host 3 does not start and I get message: "Failed - Feature 'cpuid. More information about individual parameters is below. After the failover, you can verify that the Passive node has the role of the Active node in the vSphere Client. clusters. For more information, see vSphere Resource Management Guide. 8. 3. name} failed to become vSphere HA Protected and vSphere HA may not attempt to restart it after a failure. Use the domain ID copied in Step 3. 02-21-2020 06:11 AM. VM {vm. We switch to the host console. Right click the vCLS VM within the host, and select "Upgrade VM Compatibility". 1 Solution. 0 Update 1 or when you have a new vSphere 7. To resolve this issue: Reduce the reservation set on the virtual machine to less than the capacity of the pCPU on the host. vSAN ESA has no single points of failure in its storage pool design. When there are 2 or more hosts - In a vSphere cluster where there is more than 1 host, and the host being considered for maintenance has running vCLS VMs, then vCLS. Feedback. Click NEXT and complete the New Virtual Machine wizard. (The vCLS VMs) Your invalid ones are as such because the underlying storage they are on it not accessible. So, the error “vSphere HA virtual machine failover failed” doesn’t mean that HA has failed and stopped working. 2. vSphere Cluster Services (vCLS) in vSphere 7. As a result, they will start reacting to that failure and start attempting failover of the VMs on unhealthy hosts. Enable the secondary virtual machine indicated in the alert. View the Advanced Runtime Info pane that appears in the vSphere HA section of the cluster's Monitor tab in the vSphere Web Client. Power On virtual machine – Module CPUID power on failed; Unable to delete an “inaccessible” datastore (Zombie datastore) How to fix “vSphere HA initiated a virtual machine failover action” NFS-Server with CentOS 8 / Red Hat 8 for VMware vCenter Backups; The default partition ‘/’ has only 3. The following virtual machine conditions and limitations apply when you use vSphere vMotion: The source and destination management network IP address families must match. isolation. it times out. In case of replication failures, check if the vCenter HA network has sufficient bandwidth and ensure network latency is 10 ms or less. 08-02-2015 08:56 PM. 4. The virtual machine violates failover when it attempts to power on. VM monitoring action – Default alarm to alert when vSphere HA reset a virtual machine; Failover failed – Default alarm to alert when vSphere HA failed to failover a virtual machine; And there is the following host related alarm: HA status – Default alarm to monitor health of a host as reported by vSphere HA; To configure these. Smartphones, PC & Tablets, Wearables and More. If you disabled vSphere HA, re-enable it. com. Place the vCenter HA cluster in maintenance mode. a vSphere administrator sees the alarm: vSphere HA virtual machine failed to failover. [1-1] [2023-05-11T16:27:44. Note: Any virtual machine network adapters that are not connected to a port group (standard or distributed) may cause the issue. vSphere HA will. The virtual machine violates failover when it attempts to power on. vSphere HA uses the management network only when vSAN is disabled. vSphere HA virtual machine HA failover failed. A Confirm Device Unmount window is displayed. 0 Update 1, a set of system VMs might be placed within the vSAN cluster. Select the folder and the name that should be applied to the destination VM after conversion. This can be checked by selecting the vSAN Cluster > VMs Tab, there should be no vCLS VM listed. Login to the vSphere Client. Click on the EDIT. On the Select a creation type page, select Create a new virtual machine, and click Next. 0 Update 1. g. Normally due to event "Insufficient resources to fail over this virtual machine. HA was unable to failover vCLS VMs upon host or storage failure; Resolution. 0. vCLS VM(s) get automatically deployed as part of vCenter Server upgrade, regardless which ESXi version gets used. vSphere HA virtual machine failover failed : Monitors whether a failover operation that uses vSphere High Availability failed. Hosts in the cluster are monitored and in the event of a failure, the virtual machines on a failed host are restarted on alternate hosts. Create Additional Physical-Virtual Pairs 32. If an ESXi host in a vSphere HA-enabled cluster using a vSphere Virtual Volumes datastore fails to create the . For instance, let’s say a power supply has gone down. Right-click the cluster and click Settings. Thanks!Insufficient vSphere HA failover resources vSphere 7. [All 1V0-21. vCLS is activated when you upgrade to vSphere 7. Biraz daha detaylı açıklamak gerekirse sorunu birlikte incelememiz gerekebilir. vSphere HA protection will be restored when. Migrating a VM. It does not impact the behavior of the failover. Step 1: From the vSphere Client, display the cluster in the inventory, right-click the cluster, and select Edit Settings. All the VMs on this host get the below error: vSphere HA virtual machine failover failed. Click Failures and Responses and expand VM Monitoring. The number of vSphere HA heartbeat datastores for this host is 0, which is less than required: 2. Select the vCenter Server object in the inventory and select the Configure tab. To fix the virtual machine consolidation needed status, right click the VM name in the VMware vSphere Client and in the menu that opens, click Snapshots > Consolidate. AppMonitoringNotSupported. Right-click the cluster name in the Navigator pane. If the secondary site in a stretched cluster fails, VMs failover to the preferred site. These are useful alarms for troubleshooting and know, what was happened for a virtual. 5 and then re-upgraded it. iso file to the vCenter Server CD or. 0 Update 1 or when you have a new vSphere 7. HA (High Availability) in a cluster is a common practice applied by virtualization vendors to ensure that virtual machines are operating all the time without interruption. 1st vCLS added to Host 1, 2nd vCLS Host 2, 3rd vCLS to Host 3. Click Settings in the context menu. High availability: vCLS provides a highly available control plane for vSphere clusters, ensuring that virtual machines and other services remain available even in the event of host failures or network issues. This alarm does not mean HA has failed or stopped working. Alternatively, disable vSphere HA. From vCenter, you can clear the alarm from the virtual machine via the following steps: 1. This alarm does not mean HA has failed or stopped. The virtual machines guest operating systems never reported a power event. Shut down the vSAN cluster. After the failover, you can verify that the Passive node has the role of the Active node in the vSphere Client. The failover operation is performed in the following way: Veeam Backup & Replication rolls back the VM replica to the required restore point. Select the virtual machine to be converted. When I reboot one of the 4 hosts (there is a VM running on the host),The HA failover failed on it. When vSphere HA performs failover and restarts virtual machines on different hosts, its first priority is. Reduce the occurrence of the vSphere HA virtual machine failed to failover error. The virtual machine failed to become vSphere HA Protected and HA may not attempt to restart it after a failure. When the nodes are added to the cluster, the cluster will deploy a couple of vCLS virtual machines. host. For every host on this new cluster, if i exit MM the vCLS vm attempts to deploy but fails with "No host is compatible with the virtual machine". (Ignoring the warnings vCenter will trigger. Read all about it here: vSphere 7 Update 1 – vSphere Clustering Service (vCLS) – VMware vSphere Blog. Hosts in the cluster are monitored and in the event of a failure, the virtual machines on a failed host are restarted on alternate hosts. Review the /var/log/fdm. vSphere ha virtual machine failover failed. HomeLab Actual State; HomeLab ToDo; HomeLab Journey. You may wonder why VMware introduces this, well as Niels. Ok, so I've tested it and the HA works! The test VM got restarted on a different host. vSphere HA restarted a. Usually, such triggers indicate that a host has actually failed, but failure reports can sometimes be incorrect. 0 Availability Guide. With the default Host Failures Cluster Tolerates policy, vSphere HA performs admission control by calculating the available slot. disable. What is the vCLS VM? The vCLS virtural machine is essentially an “appliance” or “service” VM that allows a vSphere cluster to remain functioning in the event that the vCenter Server becomes unavailable. All workloads are deployed into a single VMFS datastore provided by the external storage array vSphere High Availability (HA) has not been enabled vSphere Distributed Resource Scheduler (DRS) has not been enabled. Manually power on the virtual machine. To proceed with the operation to unmount or remove a datastore, ensure that the datastore is accessible, the host is reachable and its vSphere HA agent is running. The virtual machines guest operating systems never reported a power event. 0U1 позволяет размещать набор системных машин в кластере vSAN. In the event of a failure, the HA feature restarts the virtual machines on a failed host on alternate hosts. DRS is deactivated for the virtual machines, hence the virtual machine could not be moved onto the destination host. tools. W. 8; VMware. Add the disk group back to the same host and remediate the vSAN File Service for this cluster using the vSAN user interface. A vCenter HA cluster supports two types of failover. vSAN data and metadata are protected according to the Failures To Tolerate (FTT) SPBM setting. Migrating a virtual machine from one HA cluster to another changes the virtual machine's protection state from Protected to Unprotected. g. Ortamımızda vSphere HA özelliği açık ve Host. This fault occurs when the HA configuration of CPU or memory resources reserved for failover is violated or is insufficient for the DRS operation. Log in as root to the appliance shell of the Active node by using the public IP address. These VMs are necessary to maintain the health of the cluster services. This virtual machine to become protected vsphere HA and HA can not try to restart after a power failure. Hybrid Link with Cloud vCenter server will need to be recreated. Note: Also with vSphere 7. x Skip to main content This Site will be down for up to 3 hours on December 2, 2023 from 8 PM - 11 PM PST, to deploy an infrastructure update. In the vSphere Client, right-click the cluster and click Edit Settings again. In your typical server failure, the server just goes down and HA restarts virtual machines. Disable the Turn On VMware HA option. name} on host {host. With HA in VMware, companies can protect applications without another failover. Create a new vSphere cluster with vSphere High Availability (HA) enabled and move all hosts into the new cluster. VMware vSphere pools the virtual machines and hosts into a cluster and monitors them in case of system failures. Removal of the Disable acceleration option from the Virtual Machine Edit Settings dialog: Starting with vCenter Server 8. Use of any of these options requires a restart for them to take effect.