PowerCLI to vCenter; Run the following command to disable the alarmERROR: This virtual machine failed to become vSphere HA Protected and HA may not attempt to restart it after a failure. Had a strange issue in where some VMs reported "vSphere HA virtual machine failover failed" I had to reset the alarm to green on the affected VMs. 0 vCenter where HA did not appear to be functioning correctly. This is where the power of fault tolerance comes in. HA failover does not occur after setting Traffic Type option on a vmknic to support witness traffic If you set the traffic type option on a vmknic to support witness traffic, vSphere HA does not automatically discover the new setting. Reply. If VMCP fails to terminate a virtual machine, this is the number of seconds the system waits before it retries a terminate attempt. Immortal 02-14-2012 11:51 AM. Virtual Machine Failure Monitoring. 2. vSphere HA virtual machine HA failover failed. External. To enable the Bash shell, enter shell at the appliancesh prompt. If. HomeLab Actual State; HomeLab ToDo; HomeLab Journey. vSphere HA leverages a High Availability cluster (a logical grouping of ESXi hosts pooled on the same network) to protect against ESXi hosts, VMs and application failure. There were a large majority of VM's with HA alarms stating the VM could not failover. right-click cluster > vSphere HA > Admission Control" and set that to 'disable' which will allow you to power on VMs that violate availability. 0 to ESX5. The reset ensures that services remain available. This is one of a series of KB articles that provide information about default vSphere alarms for virtual machines. In the vSphere Client, browse to the vSphere HA cluster. When I reboot one of the 4 hosts (there is a VM running on the host),The HA failover failed on it. By default, the alarm is triggered by the following events: com. Click Events. The virtual machines guest operating systems never reported a power event. However, as the vSAN File Service node is a virtual machine that is pinned to the host it is running, the vSphere HA operation to migrate this virtual machine to other hosts will fail. 0 or later version. The recommendations are not specific to a particular hardware set, or to the size and scope of a particular SQL Server implementation. So I guess I can move those VMs back to that server and simply clear the alarms? Question #: 52. A host ist not mandatory to be a physical server, I could create a host in a virtual mashine. Another window. The recommendations are not specific to a particular hardware set, or to the size and scope of a particular SQL Server implementation. 2 X Processors (8 Cores each) with HT. If it's critical to get the VM online, you can review your Admission Control settings (i. In the event of a vSphere HA failover, you see messages similar to. VMFailoverUnsuccessful. Workaround: Do not provision a VM across local and remote datastores. Mark as New;. You have correctly selected 6. vSphere HA failed to restart a network isolated virtual machine. This is expected behavior for vSAN clusters. VMware vSphere HA. By default, this alarm is triggered by the following events:File system specific implementation of GetPageRef[file] failed: Unable to read virtual machine file: Powering on a virtual machine fails with the error: File system specific implementation of Ioctl[file] failed: File system specific implementation of Ioctl[file] failed: Bad entries in virtual disk descriptor files (*. Creating cluster object. • AlwaysOn Availability Groups. 693618+02:00] [vim. 0 Update 1, vSphere DRS for a cluster depends on the health of vSphere Cluster Services (vCLS). Is your means: 1- all my host managment network has been disconnected temporarily because this alarm has bee appeared on all of my vm ? i have attached pic from my cluster config. Restart HA on the cluster. It is important to recognize that SQL database availability involves more than the technologies just described. Refer to the errors list for details. 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. Set Advanced Options43. Testing alarm to notify if someone creates a snapshot on a certain virtual machine. From vCenter, you can clear the alarm from the virtual machine via the following steps: 1. These vCLS VMs should be ignored from the cluster capacity checks. Vladan Seget Tue, Nov 3 2020 vmware, virtualization 1. Cannot complete the configuration of the vSphere HA agent on the host. In most cases, performing synchronization first is best. Same with vCenter Server. 0 nodes. In the event of a host failure, you see messages similar to: vSphere HA detected a host failure. Configure alarms in vCenter Server to be triggered when these actions occur, and have alerts, such as emails, sent to a specified set of. A vSphere HA failover is in progress. Under Settings select vCenter HA and click Initiate Failover. Configuring vSphere HA (High Availability) may not be excessively complex, but it is essential to adhere to specific guidelines. To clear the alarm from the virtual machine: Select virtual machine with the triggered alarm. VMware HA provides a way to minimize virtual machine downtime in the event of a hypervisor (ESXi) host failure. Not always but sometimes we tend to see an alarm on a VM "vSphere HA virtual machine failover failed". On the VM there is a red event: vSphere HA virtual machine failover failed. Host-based Failover (Local HA) † All virtual machines and their configuration files must reside on shared storage,. + reduce vm monitoring sensivity. Too Much Activity on VMFS Volume Can Lead to Virtual Machine Failovers. Reply. Disabling and re-enabling the "vSphere HA virtual machine failover failed" alarm fixed the problem for me. Review the /var/log/vpxa. x and 5. a vSphere administrator sees the alarm: vSphere HA virtual machine failed to failover. What happened? If the vSphere HA virtual machine monitoring action alarm reappear, you can try reinstalling VMware Tools and re-enabling vSphere HA VM Monitoring feature. This is expected behavior for vSAN clusters. vsphere HA virtual machine failover failed. A dialog offers you the option to force a failover without synchronization. vSphere HA (VMware High Availability): VMware vSphere HA (High Availability) is a utility included in VMware's vSphere software that can restart failed virtual machines (VMs) on alternative host servers to reduce application downtime. To isolate storage traffic from other networking traffic, it is considered best practice to use either dedicated switches or VLANs for your NFS and iSCSI ESX server traffic. VMware vSphere Fault Tolerance - Testing Fault Tole…The virtual machine failed to become vSphere HA Protected and HA may not attempt to restart it after a failure. When a vSAN node becomes isolated, vSAN will power o ff virtual machines but will not restart them. This is expected behavior for vSAN clusters. Create a vSphere HA cluster for VMware VM failover step by step. One of them (say Host3) just exit Maintenance Mode. The name of the directory is . The VM Overrides selection box might be a bit. 1 to 5. vSphere HA virtual machine HA failover failed. HA determines the current failover capacity of the cluster, which is the number of hosts that can fail and still leave enough slots to satisfy all the powered-on virtual machines. . Hating to click each one to reset the alarm that wasn’t clearing I found the following solution. When i stop "esxi1" my Test WM switch off and no server switching. Successfully upgraded. 0 Kudos a_p_ Leadership 10-17-2020 05:03 AM. Cluster config Issue: vSphere HA initiated a failover action on 1 virtual machines in cluster LabCluster on datacenter DC01. Click OK. The most. No: Cluster: 6. In such a case, the VM Monitoring service determines that the virtual machine has failed and the virtual machine is rebooted to restore service. Symptoms Following alert is observed on vCenter: Resolution This alert is triggered whenever a High Availability primary agent declares a host as dead. HA is a feature which restarts failed virtual machines (or inaccessible virtual machines if host isolation is configured) and does result in downtime for the VM, since the entire virtual machine is powered off and restarted. HA must respect VM anti-affinity rules during failover-- When the advanced option for VM anti-affinity rules is set, vSphere HA does not fail over a virtual machine if doing so violates a rule. Causes. Biraz daha detaylı açıklamak gerekirse sorunu birlikte incelememiz gerekebilir. One of them (say Host3) just exit Maintenance Mode. The only possibility to get rid of the message is to disable and re-enable HA for the cluster. See VMware online documents such as Troubleshooting VMware High Availability and the vSphere Troubleshooting Guide to resolve HA issues. Important take-away: a vMotion is not an HA failover. 4. vSphere HA is used to restart these virtual machines on hosts that have not been. comHA initiated a virtual machine failover action in cluster Prod-Cluster in datacenter Prod-DataCenter. Click Edit. This is expected behavior for vSAN clusters. vSphere HA Virtual Machine failover unsuccessful. ResolutionsIn the vSphere Web Client, navigate to the vCenter Server instance. By default, the alarm is triggered by the following event: vim. 5. We will simulate a host failure by powering it off. Virtual machines in the Inventory appear as Unprotected in the vSphere HA (High Availability) Protection column. Press Esc to log out. Ancak, bir ana bilgisayar yani ESXi sunucu herhangi bir sebepten dolayı izole oldu ise bu hata ile “ vSphere HA virtual machine failed to failover ” karşılaşabilirsiniz. Configuration. vSphere HA Admission ControlThen I turned on HA on this cluster. It was logged around the time when vSphere rebooted following the patch. All of Microsoft SQL Server availability technologies are supported on the core vSphere platform, including: • Log shipping. After the failover finishes, you must restart the remediation task on the new. SDDCs with more than one node provide data redundancy through various configurations of Redundant Array of Inexpensive Disk (RAID) along with Failure to Tolerate (FTT), which defines the number of host and device failures that a virtual. HA failover does not occur after setting Traffic Type option on a vmknic to support witness traffic If you set the traffic type option on a vmknic to support witness traffic, vSphere HA does not automatically discover the new setting. Hope this Helps :)Using vSphere HA with Distributed Resource Scheduler (DRS) combines automatic failover with load balancing. Refer to VMware Online Documentation for more information about vSphere HA failover problems. Veeam VMware: VM storage compliance Alarm. 1 cluster with some problems HA. Same with vCenter Server. Review the event description for detail on the cause. 00100. VM. The Witness node becomes unavailable while the Passive node is trying to assume the role. It will also want to try to restart those VMs. Enter the word reset in the search field. “Insufficient resources to satisfy configured failover level for vSphere HA”. Click on the EDIT. Failover clustering. A power off response is initiated on the fourteenth second and a restart is initiated on the fifteenth second. The message cannot be removed. The guest operating system on the VMs did not report a power failure. Maximizing the compatibility between virtual machines and hosts in the cluster can also. If the Witness node recovers from the failure, follow these steps. log indicating a boot. Deselect the Turn On vSphere HA option. Monitors the host health status reported by vSphere High Availability. These VMs are necessary to maintain the health of the cluster services. Clicking on this reveals the VM Overrides selection box. I am employed by ITQ, a VMware partner as a Senior Consultant. You can provide business continuity using vCenter High Availability (vCenter HA) and vSphere Fault Tolerance (FT). Refer to the online VMware document vSphere Resource Management. 1. You. Veeam VMware: vSphere HA failover failed Alarm. This happened at the exact same time the HA agents were being installed on all the hosts in the cluster. Use of different host hardware can, and often does, lead to an imbalanced cluster. Not enough resources for vSphere HA to start VM. Insufficient resources to fail over VirtualMachine01 in Cluster01 that resides in Datacenter01. Unisys recommends that you enable vSphere HA and host monitoring for a cluster of virtual machines. HA centralizes the guest machines and hosts in a cluster for failover. . Пользователям запрещено их отключать, так как это. Reply. 5. 7, 7. Resolution. 1. Veeam VMware: vSphere HA failover in progress on vSphere Cluster. The VSAN and management networks are on a different physical infrastructure, so I changed the following settings in the advanced options of vSphere HA: The isolation response was set to "Power off,then fail over". vc. X-vMotion of a virtual SAN virtual machine from a High Availability (HA) cluster might result in an alarm. vSphere Cluster HA provides high availability for virtual machines by pooling the virtual machines and the hosts they reside on into a cluster. vSphere HA Virtual Machine Failover failed. x, 5. Veeam VMware: vSphere ESXi Dump Collector Health Alarm; Veeam VMware: vSphere HA VM Component Protection Could Not Power Off a Virtual Machine Alarm; Veeam VMware: vSphere Profile-Driven Storage Service Health Alarm; Veeam VMware: Virtual Machine Network Adapter Reservation Status Alarm; Veeam VMware:. The primary host of a VMware vSphere ® High Availability cluster is responsible for detecting the failure of secondary hosts. When a vSAN node becomes isolated, vSAN will power o ff virtual machines but will not restart them. vSphere HA virtual machine HA failover failed. All Toggle submenu. Workaround: Do not select HA heartbeat datastore while configuring vSphere. This is a known behavior by design and is currently being reviewed by VMware. Reason: Failed to start the virtual machine. 1 cluster with some problems HA. At the vCenter level select the Alarms tab, Edit the settings of the alarm, select the General tab, disabled/re-enable the alarm. vSphere HA is resetting VM. a few virtual machines are showing this. Monitors the host health status reported by vSphere High Availability. Veeam VMware: vCenter License Capacity Monitoring Alarm. Click vSphere HA located under Services. After you resolve this condition, vSphere HA should configure correctly. From Site Recovery Manager perspective, there is no functional impact as all virtual machines are recovered successfully. 19 Questions] Using vSphere HA Orchestrated Restart an administrator places the most mission critical VM in the highest priority. Click Edit near vSphere HA that is turned off in our case. [1-1] [2023-05-11T16:27:44. Remember, HA uses slot sizes to calculate if there are enough resources for a failover and if you have any reservation on a VM within the cluster it will use this reservation to calculate the slot size which could lead you. A number of different issues could be causing this behavior with your vCenter services, but if you can isolate it down to a particular host or even VM as. Failover clustering. Veeam Management Pack 9a for Microsoft System Center. vcha-reset-primary. This virtual machine to become protected vsphere HA and HA can not try to restart after a power failure. When an ESXi host is down due to a hardware failure and HA/FDM triggered failover of the host's virtual machines, the following alarm may be notified. vSphere HA will. vSphere HA will keep retrying to fail over the virtual machines until it gets a successful placement, however if an affined virtual machine is already seen as powered on then DRS will attempt to place its partner. From Site Recovery Manager perspective, there is no functional impact as all virtual machines are recovered successfully. 2 X Processors (8 Cores each) with HT enabled. Review this list before you set up a vSphere HA cluster. simplified chinese. If vSphere HA is not able to reboot all the virtual machines of the failed server, for example if it has insufficient resources, vSphere HA attempts to restart those. Solution. Review the event description for detail on the cause. Connect to the ESXi host using SSH. {"payload":{"allShortcutsEnabled":false,"fileTree":{"":{"items":[{"name":"LICENSE","path":"LICENSE","contentType":"file"},{"name":"README. VMware vCenter Server™, vSphere, and vSAN collectively create the best platform for running and managing virtual machine workloads requiring predictable performance and rapid recovery in the event of a disaster. If it's critical to get the VM online, you can review your Admission Control settings (i. ”. md. esxi41. In the Value field,type the value for the specified key. Reenable CBRC and power on the virtual machine. 188 on host 192. When an ESXi host is down due to a hardware failure and HA/FDM triggered failover of the host's virtual machines, the following alarm may be notified. esxi41. A vSphere administrator sees the alarm: vSphere HA virtual machine failed to failover This occurred for virtual machines (VMs) in a cluster with vSphere High Availability (HA) enabled. We believe that the alarms are false positives and don't want our envirnoment clutter with a bunch of false "alarms. after restating of that esx, vms become active but power off condition. > Veeam VMware: vSphere HA failover failed Alarm Veeam VMware: vSphere HA failover failed Alarm. If restarting the virtual machines is not possible, for example the failover hosts have failed or have insufficient resources, then vSphere HA att Once a host fails, another host will take over the services immediately and perform virtual machine failover. maxresetsDefault alarm to alert when vSphere HA failed to failover a virtual machine; Monitors the status of the Baseboard Management Controller. Due to the disruption in the communications between HA agents running on the ESX hosts, the HA agents on good hosts (the one or two hosts) will view the unhealthy hosts as Dead (failed). All shared datastores failed on a host in a cluster. Causes. How can we get rid of these. Enabling High Availability on a. From vCenter, you can clear the alarm from the virtual machine via the following steps: 1. 0, as new hardware will be added soon, and it will be installed directly with ESXi5. See VMware online documents such as Troubleshooting VMware High Availability and the vSphere Troubleshooting Guide to. For now, don’t activate any of the cluster’s features (HA, DRS). Veeam VMware: VM storage compliance Alarm. For more information, see VMware High Availability configuration issues when an iSCSI Service Console is on the same network (1003789). Not always but sometimes we tend to see an alarm on a VM "vSphere HA virtual machine failover failed". The VMware’s High Availability feature, also known as VMware HA, is a subset of vSphere Availability and part of the broader vSphere suite of technologies. Best Practices for VMware vSphere256 High Availability Clusters47. vSphere HA virtual machine failover failed : Monitors whether a failover operation that uses vSphere High Availability failed. x, 5. 0: das. I apologize for the very basic question, but I need to understand some basic concepts about HA starting from a problem I faced some times ago. I am also unable to modify the Alarm Frequency, as it is greyed out. vSphere HA uses the management network only when vSAN is disabled. This occurred for a number of virtual machines on a particular ESXi host in a cluster with vSphere High Availability (HA) enabled. • AlwaysOn Availability Groups. HA. I am a Solutions Architect in the area VMware, Cloud and Backup / Storage. vSphere HA virtual machine HA failover failed. Here are a few notable alternatives to Proxmox: ⚘ VMware vSphere. Under vSphere HA settings, change the Datastore heartbeat to None. Then we change the DRS. To prepare the environment for failover simulation: Log in to the vCenter Server with the vSphere Client. 4. sh restart with HA enabled on the Cluster and the isolation response set as Power off/Shutdown/leave power on (I tried with all the options). local that contains two virtual machines. One thing to note is the script looks for only the alarms with Action set, i. To avoid resetting virtual machines repeatedly for nontransient errors, by default, virtual machines will be reset only three times during a certain configurable time interval. 4. Resolutions. HA sometimes leaves VMs and hosts in inconsistent state. For more information about configuring the vSphere Lifecycle Manager remediation settings, see Configuring the vSphere Lifecycle Manager Remediation Settings. spanish: Le basculement de la machine virtuelle vSphere HA a échoué. Solution: Disable vSphere HA and Enable vSphere HA Again Step 1: From the vSphere Client , display the cluster in the inventory, right-click the cluster, and select Edit Settings . Take the virtual machine snapshot. Updated on 04/27/2022 vSphere HA provides high availability for virtual machines by pooling the virtual machines and the hosts they reside on into a cluster. HealthStatusChangedEvent: Health status of the ESX Agent Manager changed. Those host failure types are: Failure – A failure is unexpectedly what you think. PR 2337784: Virtual machines on a VMware vSphere High Availability-enabled cluster display as unprotected when power on If an ESXi host in a vSphere HA-enabled cluster using a vSphere Virtual Volumes datastore fails to create the . 5, the vCenter High Availability feature was introduced. The primary host of a VMware vSphere ® High Availability cluster is responsible for detecting the failure of secondary hosts. From Site Recovery Manager perspective, there is no functional impact as all virtual machines are recovered successfully. I have one VM on each ESXi host and when I try to initiate HA by shutting down. e. 4. Below is the CPU and. Mark as New;. vSphere ha virtual machine failover failed. This monitor tracks the vCenter ESX Agent Manager Health Alarm. Click on the Alarms tab and then the Triggered Alarms button. {"payload":{"allShortcutsEnabled":false,"fileTree":{"":{"items":[{"name":"LICENSE","path":"LICENSE","contentType":"file"},{"name":"README. Here are a few notable alternatives to Proxmox: ⚘ VMware vSphere. If the vCenter Server reports the hosts as responding: Enable the SSH access to the host. I even tried on a stand alone host which is not added to. The failed VM stays disconnected until the host is rebooted and back online 😕 It doesnt get reconnected or restarted on another host. 04/09/2020 16:21:14. Monitors the host health status reported by vSphere High Availability. Virtual machine migrates to Site 2 hosts and I/O is directed to the local storage S-VOL on Site 2. Reply. Virtual Machine Failure Monitoring is technology that is disabled by default. HA continuously monitors capacity utilization and “reserves” spare capacity to be able to restart virtual machines. HCX supports vSphere environments running VMware vSphere 8. 2 - i have 3 host on my cluster Is your means that all of esxi managment network has been dc and there was not any host for restart vms and start them on the. 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. Cause A vCenter HA failover might not succeed for these reasons. 0. 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 default. 5, 6. vSphere HA is failed over the operation in progress in the cluster in data center. The summary tab of the virtual machine displays the warning: The virtual machine failed to become. After the host is back online, the VM stays offline and gets not powered up again!With this policy, when a host fails, vSphere HA attempts to restart its virtual machines on the specified failover host, which under normal operating conditions remains unused. After observing the. 4 Kudos. I figured it would be quite simple to write a script to run through all our VMs, and clear the alarm if the triggered date or alarm type matched certain criteria. A user asks for help with a problem that causes alerts to appear when logging in to the web UI of vCSA 7. german: vSphere HA-Failover einer virtuellen Maschine fehlgeschlagen. This information is for anyone who wants to provide business continuity through the vSphere. If you select Disabled, this setting turns off host monitoring and VMs are not restarted when host failures occur. We will simulate a host failure by powering it off. 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. VMware vSphere High Availability (HA) is a utility included in vSphere suite that provides high availability for virtual machines. When you expand the Configuration menu, you should see an option called VM Overrides. When I try to reconfigure HA on the host. . HA sometimes leaves VMs and hosts in inconsistent state. 2. This document provides best practice guidelines for designing and implementing Microsoft SQL Server (“SQL Server”) in a virtual machine to run on VMware vSphere (“vSphere”). Published: 25 Feb 2020. Deal with the vSphere HA virtual. Review the event description for detail on the cause. Advanced features are what really add value to vSphere and help distinguish it from its competitors. See VMware online. With dedicated failover hosts admission control, when a host fails, vSphere HA attempts to restart its virtual machines on any of the specified failover hosts. Connect to the ESXi host using SSH. Hi James, Here is the new version, find the attached below. The error "vSphere HA virtual machine failover failed" occurs when a host is disconnected from the network or has a degraded storage device. french: Le basculement de la machine virtuelle vSphere HA a échoué. After the host is back online, the VM stays offline and gets not powered up again! In the Home screen, click Hosts and Clusters. Resolutions. I can manually clear the alarm but comes back after a while. This is expected behavior for Virtual SAN clusters. Solution. See the Help Center for more information including reference lists of all Rules and Monitors and full set of User Guides for the Veeam MP for VMware. vsphere HA Virtual Machine failover failed. When a number of file system locking operations, virtual machine power ons, power offs, or vMotion migrations occur on a single VMFS volume, this can trigger fault tolerant virtual machines to be failed over. The vmware-fdm VIB is the package that runs this service on each ESXi host; Powering on virtual machines fails with error:. The solution is to remove the VMs from. Bu yazımda sizlere vSphere HA ile ilgili görebileceğiniz bir alarm’dan bahsetmek istiyorum. 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. Best Practices for VMware vSphere256 High Availability Clusters47. If the vCenter Server has not yet marked a failed ESXi host as not responding, the virtual machines on it may still have a status of powered on from the vCenter Server perspective. Click the Configure tab. It does not mean. x. HA initiated a failover action. ExternalvSphere HA (High Availability) is a feature in VMware vSphere that provides automatic restart of virtual machines (VMs) when a physical host fails. How vSphere HA Works. Click Edit. Failed to flush the data to the Passive node. VMware High Availability detects failed VMs and restarts them on different physical servers without the need for human intervention. VM-Host affinity. When a VM misses a heartbeat, VMware HA deems this VM as. Causes. Question #: 23. 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. 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. 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. Lock-lost question was answered by vSphere HA. An HA failover is an HA failover. vSphere HA Admission Control To look for events related to the virtual machine in vCenter Server: Select the virtual machine in vCenter Server. LoginHA failover does not occur after setting Traffic Type option on a vmknic to support witness traffic If you set the traffic type option on a vmknic to support witness traffic, vSphere HA does not automatically discover the new setting. german: vSphere HA-Failover einer virtuellen Maschine fehlgeschlagen. The result is that every single VM fixed by this script now has a 'vSphere HA virtual machine failover failed' alarm triggered. x. Because the cluster's Configured Failover Capacity is set to 25%, 45% of the cluster's total CPU resources and 46% of the cluster's memory resources are still available to power on additional virtual machines. vSphere HA virtual machine failover unsuccessful. Veeam VMware: vSphere HA failover failed Alarm. 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 VMsIn the vSphere 7. The virtual machines guest operating systems never reported a power event. From Site Recovery Manager perspective, there is no functional impact as all virtual machines are recovered successfully. I have a message "Failover of vSphere HA virtual machine failed" no more information. I got the warning from a fail over event last night. Resolution. Is your means: 1- all my host managment network has been disconnected temporarily because this alarm has bee appeared on all of my vm ? i have attached pic from my cluster config. Add the disk group back to the same host and remediate the vSAN File Service for this cluster using the vSAN user interface. This generated an alert on several hundred VMs. Add the disk group back to the same host and remediate the vSAN File Service for this cluster using the vSAN user interface. HA can then detect VM failures and outages and restart them on other stable.