vSphere HA uses clustered ESX hosts to provide rapid recovery in the event of a failover. Review the /var/log/vpxa. french: Le basculement de la machine virtuelle vSphere HA a échoué. Testing alarm to notify if someone creates a snapshot on a certain virtual machine. 4. • AlwaysOn failover cluster instances. Edit the Cluster Settings. For more information about configuring the vSphere Lifecycle Manager remediation settings, see Configuring the vSphere Lifecycle Manager Remediation Settings. Veeam VMware: VM storage compliance Alarm. From Site Recovery Manager perspective, there is no functional impact as all virtual machines are recovered successfully. 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. As the use of these options can significantly impact the operation of vSphere HA and hence the availability protection provided, it is highly recommended that users fully understand the use and ramifications of using these options. In the event of physical server failure, affected virtual machines are automatically restarted on other production servers with spareThe vSPhere HA availability state of this host has changed to unreachable. Click vSphere HA located under Services. Blog; HomeLab. When vSphere HA performs failover and restarts virtual machines on different hosts, its first priority is. (VM1 and VM2) are failed (these VMs are powered off). Adding more hosts to the cluster can increase the number of available failover resources and resolve the issue. Right-click the cluster and click Settings. X-vMotion of a virtual SAN virtual machine from a High Availability (HA) cluster might result in an alarm. From Port groups tab, select VM Network and click Actions > Edit settings. If this is not successful within 5 minutes, a power off response type is executed. comSimilarly, the Current Memory Failover Capacity is 71% ( (21GB-6GB)/21GB). Click Edit. Configuration. 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. 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. 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. • Database mirroring. 0Issue: Системные виртуальные машины не выключаются. This is expected behavior for vSAN clusters. event. Updated on 05/31/2019. Connect to the console of your ESXi host. Navigate to Monitor tab, and click Issues and Alarms > Triggered Alarms. HA is enabled and many VM are confngured to restart in case of failure of a. 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. 0U1 позволяет размещать набор системных машин в кластере vSAN. Actions. 4. vmdk, *. By default, the alarm is. Mean ha is not working properly. 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. Those host failure types are: Failure – A failure is unexpectedly what you think. Recently I ran into an issue where HA triggered on a cluster but failed. event. 1. As a result, VMware vSphere HA is configured to tolerate the failure of a single host. Default vSphere alarms are set on the vCenter Server level and propagated to all child objects in the inventory. 5, 6. [All 2V0-602 Questions] A vSphere Administrator sees the alarm: vSphere HA virtual machine failed to failover. 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. To clear this alarm on multiple virtual machines, you may select the host, cluster, data center, or vCenter Server object in the left pane and continue with below step to clear the alarms . 0 enterprise plus and one vc lic. How can we get rid of these. The name of the directory is . Knowledge base article 1006421 provides. A forum discussion about a common error message when using vSphere High Availability (HA) on ESXi hosts. Refer this KB - 2034571. The virtual machines guest operating systems never reported a power event. 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. french: Le basculement de la machine virtuelle vSphere HA a échoué. Browse to the cluster in the vSphere Web Client object navigator. Click Edit. vSphere HA virtual machine failover unsuccessful. Use of different host hardware can, and often does, lead to an imbalanced cluster. With vSphere HA enabled, let us look at some of its capabilities. Causes. High Availability provides uniform, cost-effective failover protection against hardware and operating system outages within your virtualized IT environment. vSphere High Availability cluster only supports ESXi 6. 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. Workaround: Perform the following steps to take a VM snapshot after you extend the size of a VM's virtual disks. In this article. Stop replication of the source virtual machine. Upgrade the hardware on the hosts or add more hosts. Users share their solutions, such as editing the. vSphere HA is used to restart these virtual machines on hosts that have not been. This article provides information to: Clear the vSphere HA virtual machine failed to failover error from the virtual machine. vSphere Availability VMware, Inc. This is expected behavior for vSAN clusters. Performing failover: The virtual machine or its active server is inaccessible, and the system is moving the virtual. To enable the Bash shell, enter shell at the appliancesh prompt. Three replies explain how to clear the alarm definitions for vSphere HA virtual machine failover failed and provide a link to a KB article with more information. 0 Kudos Troy_Clavell. The solution is to remove the VMs from. If the vCenter server is self-managed, the Resource settings page is displayed. vmwaredemo. I have a problem witch HA, i have 2 esxi in cluster. Actions. 19 Questions] A vSphere administrator sees the alarm: vSphere HA virtual machine failed to failover. You may create a VM by anyway, for example but not limited to - Register a VM from SAN - Create a new VM from a web client - Deploy a VM from a templateThis host currently has no management network redundancy. You have correctly selected 6. Veeam VMware: Virtual Machine Network Adapter Reservation Status Alarm; Veeam VMware: vSphere Distributed Switch MTU matched status Alarm; Veeam VMware: vSphere Distributed Switch MTU supported status Alarm; Veeam VMware: vSphere Distributed Switch teaming matched status Alarm; Veeam VMware: vSphere Distributed. From Site Recovery Manager perspective, there is no functional impact as all virtual machines are recovered successfully. button. 168. Once a cluster has been configured for "Retreat Mode," virtual machine workloads will continue to operate, but cluster features such as vSphere High Availability (vSphere HA) and Distributed Resource Scheduler (DRS) will be degraded until the vSphere Cluster Service VMs have been successfully re-deployed. Check if vCenter Server was just installed or updated. Add the disk group back to the same host and remediate the vSAN File Service for this cluster using the vSAN user interface. There were a large majority of VM's with HA alarms stating the VM could not failover. There is an issue with the disk for this virtual machine. Cause. Power on a virtual machine. Host-based Failover (Local HA) † All virtual machines and their configuration files must reside on shared storage,. And I am a bit confused from the documentation, maybe my. event. vSphere HA virtual machine HA failover failed. How vSphere HA Works vSphere HA provides high availability for virtual machines by pooling the virtual machines and the hosts they reside on into a cluster. VMware Employee 09-04. See the detailed steps and replies from experts and other users. Purpose This article provides steps to determine which virtual machines are restarted during a vSphere High Availability (HA) failover and on which hosts they. vSphere HA virtual machine HA failover failed. 32. By default, VMware HA prepares for the worst-case scenario of the largest, most powerful host in. See VMware online. simplified chinese. Element vib failed to validate content'] fdm-installer. 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. An HA failover is an HA failover. It’s because the timeout settings in the HA needs to be changed to support this, luckily VMWARE provided a KB article about how to fix: Performing a Reconfigure for VMware HA operation on a primary node causes an unexpected virtual machine failover (2017778) So basically, edit your HA in Adv. We switch to the host console. 168. 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). 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. Jump to solution. This means that vSphere HA is unable to failover virtual machines if a rule would be violated. Because the virtual machines continue to run without incident, you can safely. From Site Recovery Manager perspective, there is no functional impact as all virtual machines are recovered successfully. From the pop-up window, click Security to open the drop-down menu. Then we change the DRS setting to aggressive and run HA reconfigure on the other two ESX hosts (Let us call them Host1 and Host2). From vCenter, you can clear the alarm from the virtual machine via the following steps: 1. This is expected behavior for vSAN clusters. Review VMware online documents such as Troubleshooting VMware High Availability and the vSphere. Log in to the VMware vSphere Client. Verify that VMware HA is only attempting to configure on one Service Console. See VMware online documents such as Troubleshooting VMware High Availability and the vSphere Troubleshooting Guide to resolve HA issues. vSphere HA Virtual Machine failover unsuccessful. 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. 4. vSphere HA is failed over the operation in progress in the cluster in data center. vSphere HA virtual machine monitoring action : Monitors whether vSphere High Availability has restarted a virtual machine. Refer to VMware Online Documentation for more information about vSphere HA failover problems. Steps to restart the HA service: In vCenter vSphere Client URL go to the Host Cluster > Configure > vSphere Availability > vSphere HA is Turned ON >. Select vCenter HA under settings. From the Home screen, click on Hosts and Clusters. x in a vSphere HA cluster, a virtual machine residing on a local storage is marked as protected, but it cannot failover. Click Edit. vCenter HA provides failover protection against hardware and operating system outages within your virtualized IT environment. With vSphere 7 U1, VMware introduced vSphere Clustering Service (vCLS), which helps in a situation when vCenter Server becomes unavailable. Click on the EDIT. 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. If there is no form of communication (datastore/network) possible, what the HA primary will do is it will list all the VMs that are currently not running within that partition. Log into the ESXi/ESX host or vCenter Server using the vSphere Client. 5. View the Advanced Runtime Info pane that appears in the vSphere HA section of the cluster's Monitor tab in the vSphere Web Client. Click Events. The primary host of a VMware vSphere ® High Availability cluster is responsible for detecting the failure of secondary hosts. In the Value field,type the value for the specified key. Key Features: VMware vSphere is a leading commercial virtualization platform known for its robust features, scalability, and reliability. Show Suggested Answer Hide Answer Suggested Answer: B 🗳️ 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. 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. spanish: Le basculement de la machine virtuelle vSphere HA a échoué. reregisterRestartDisabledVMs: When vSphere HA is disabled on a specific virtual machine this option ensures that the virtual machine is registered on another host after a. Click Failures and Responses and then expand Host Failure Response. Workaround: Do not select HA heartbeat datastore while configuring vSphere. Key Features: VMware vSphere is a leading commercial virtualization platform known for its robust features, scalability, and reliability. vcha-reset-primary. vSphere HA unsuccessfully failed over. This is a server for exams and the supplier tells us to do so. 5 Update 3 using WSFC. With vSphere HA, you can pool physical servers on the same network into a high availability cluster. Navigate to the cluster in Hosts and Clusters section, right-click the name, and click Settings. Resolutions. Solution 1. 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. . Veeam VMware: vSphere HA failover in progress on vSphere Cluster. vc. Steps to restart the HA service: In vCenter vSphere Client URL go to the Host Cluster > Configure > vSphere Availability > vSphere HA is Turned ON >. Dedicated Failover Hosts Admission Control You can configure vSphere HA to designate specific hosts as the failover hosts. The Passive node fails while trying to assume the role of the Active node. Enabling High Availability on a. A power off response is initiated on the fourteenth second and a restart is initiated on the fifteenth second. 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. These hosts are also sharing a single shared datastore. No actions defined. EventEx] [info] [] [DC-xxxxx] [87492702] [vSphere HA failover operation in. settings and add (or change): For 7. This is one of a series of KB articles that provide information about default vSphere alarms for virtual machines. 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. For more information, see Cannot install the vSphere HA (FDM) agent on an ESXi host (2007739). vSphere Availability VMware, Inc. 3. vSphere HA actions. + reduce vm monitoring sensivity. When I try to reconfigure HA on the host. Click the Tasks & Events tab. There is an issue with VMware high-availability protection for this virtual machine. vSphere HA virtual machine HA failover failed. 2 in cluster ALG-Cluster . Press Esc to log out. Resolutions. Click the Events button. How vSphere HA Works. VMware vSphere High Availability (HA) protects a standard cluster from underlying host failure. vSphere HA Virtual Machine Failover failed. " Turning off HA and turning it back on (basically reconfiguring HA on the cluster) 1. HA is a great vSphere feature, but a reactive one. If a vCenter HA failover is initiated during the remediation of a cluster, the remediation task is canceled. When I viewed the HA Cluster Status, it showed 4 hosts in initialization status and 1 connected to the master. . This occurred for virtual machines (VMs) in a cluster with vSphere High Availability (HA) enabled. • AlwaysOn failover cluster instances. HA was unable to failover vCLS VMs upon host or storage failure; Resolution. The failover capacity of hosts can be defined in three different ways: Cluster resource PercentagevSAN uses its own logical network. You will see the new virtual machine listed as a potential virtual machine available for enabling high availability. A pop-up window opens Edit Cluster Settings select vSphere HA radio and turn off (not green) > click OK. 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 (*. 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 (*. Reason: VMware Tools heartbeat failure. ESX-01 experiences a failure and vSphere HA is initiated. Not enough resources for a fail over. 0 Update 2. It is important to recognize that SQL database availability involves more than the technologies just described. 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. Ok, so I've tested it and the HA works! The test VM got restarted on a different host. vCenter High Availability (vCenter HA) protects the vCenter Server Appliance against host and hardware failures. vsphere HA Virtual Machine failover failed Hi, There are 3 ESX hosts in our cluster. Vladan Seget Tue, Nov 3 2020 vmware, virtualization 1. Configure Heartbeat Datastores 42. Refer to the online vSphere. VMs have been migrated and. vSphere 7. Enabling High Availability on a. Note: Also with vSphere 7. Insufficient resources to fail over VirtualMachine01 in Cluster01 that resides in Datacenter01. When vSphere HA cluster is created, it would automatically select one host as the master host to communicate with vCenter and. Mark as New; Bookmark;When you perform a Reconfigure for VMware HA operation on the primary node in an HA cluster, an unexpected virtual machine failover alert is triggered for the virtual machines running on that primary node. md. The virtual machine violates failover when it attempts to power on. Details. Click the Manage tab and click Settings. Depending on the type of failure detected, the virtual machines running on the hosts might need to be failed over. 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. To enable automatic failover of virtual machines in the case of a failure, ensure that vSphere HA is turned on. As a result, they will start reacting to that failure and start attempting failover of the VMs on unhealthy hosts. This fault is reported when: The host is requested to enter maintenance or standby mode. To do this you need to create another cluster as a test. Consolidation has failed. Select the alarm and select Acknowledge. Admission Control/Host failures cluster tolerates: 1. You can configure vSphere HA to perform. Virtual machines on a particular datastore shows as unprotected and shows as protected when migrated to a different datastore. Troubleshooting vSphere HA Failure Response. vSphere HA virtual machine monitoring action : Monitors whether vSphere High Availability has restarted a virtual machine. vSphere HA virtual machine failover failed. 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. Networking Settings. Click the Configure tab. I got a 5. 2. No: Cluster: 6. Once all Hosts have been unconfigured for HA, check "Turn on VMware HA". x. HCX supports vSphere environments running VMware vSphere 8. Clicking on this reveals the VM Overrides selection box. vSphere HA virtual machine HA failover failed. Click the Events button. 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. 1) 4 hosts in the cluster started to attempt HA failover. {"payload":{"allShortcutsEnabled":false,"fileTree":{"":{"items":[{"name":"LICENSE","path":"LICENSE","contentType":"file"},{"name":"README. This script has not been checked by Spiceworks. ”. Also, all the VMs indicating that HA failure message have "vSphere HA Protection: Protected'. I have one VM on each ESXi host and when I try to initiate HA by shutting down. 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. If you create a DRS affinity rule for your cluster, you can specify how vSphere HA applies that rule during a virtual machine failover. After the host is back online, the VM stays offline and gets not powered up again!Then edit settings of your cluster, go to Cluster Features and uncheck "Turn on VMware HA". Question #: 74. Use the Up/Down arrows to navigate to Troubleshooting Options > Restart Management Agents. Hosts in the. Navigate to the cluster in Hosts and Clusters section, right-click the name, and click Settings. 1. This is resolved in vCenter Server 5. This occurred for a number of virtual machines on a particular ESXi host in a cluster with vSphere High Availability (HA) enabled. Search for events with vSphere HA in the description. On the Failures and Responses section, select Enable Host Monitoring. Vladan Seget Tue, Nov 3 2020 vmware, virtualization 1. VMware vSphere HA Cluster Failure Types. Reply. vCLS on a cluster configures a quorum on vCLS system VMs on the cluster. Virtual machine migrates to Site 2 hosts and I/O is directed to the local storage S-VOL on Site 2. Topic #: 1. Causes. md. 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”). Check whether the ESX Agent Manager service is running. Run the following command. 00100. 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. 7, 7. vSphere HA has been turned on. 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. • AlwaysOn Availability Groups. Select the virtual machine in vCenter Server. All services that cannot migrate but are protected by application-level high availability continue to provide services with zero downtime. There exists an KB article about this. Deal with the vSphere HA virtual machine failed to failover error if occurs. Connect to the ESXi host using SSH. vSphere HA is used to restart these virtual machines on hosts that have not been. We will see how virtual machines are recovered from a host that is failed. An active path in a single host fails. After a HA failover event you see a warning message for a cluster in your vCenter Server/webclient: “HA initiated a failover on. When a vSAN node becomes isolated, vSAN will power o ff virtual machines but will not restart them. 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. Topic #: 1. HA. There is an issue with vSphere High Availability configuration for this cluster. It could be a result of insufficient resources to power the VM on. after restating of that esx, vms become active but power off condition. From Site Recovery Manager perspective, there is no functional impact as all virtual machines are recovered successfully. Automatic Detection of Server Failures. vCLS VMs failed to deploy on a 1 or 2 node vSAN cluster with the error:. The error "vSphere HA virtual machine failover failed" occurs when a host is disconnected from the network or has a degraded storage device. What is a possible cause of this event? A. The message cannot be removed. Go to Configure> vSphere Availability> Edit. Successfully upgraded. vSphere HA provides high availability for virtual machines by pooling them and the hosts that they reside on into a cluster. 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. The primary host of a VMware vSphere ® High Availability cluster is responsible for detecting the failure of secondary hosts. 0 or later version. Workaround: Do not provision a VM across local and remote datastores. 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. 1. vSphere-HA folder, vSphere HA configuration fails for the entire cluster. 3. Insufficient resources to satisfy configured failover level for vSphere HA. I am a Solutions Architect in the area VMware, Cloud and Backup / Storage. english: vSphere HA virtual machine failover failed. korean: vSphere HA 가상 시스템 페일오버 실패. A user asks for help with a problem that causes alerts to appear when logging in to the web UI of vCSA 7. 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. With HA in VMware, companies can protect applications without another failover. Refer to the online VMware document vSphere Resource Management. HA can then detect VM failures and outages and restart them on other stable. This information pane. e. We just want to migrate VM to the ESX host that just exit from maintenance mode. 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". A failover cluster is a group of at least two servers or nodes that are configured to take over workloads when one node is down or unavailable. If. Ping the default gateway. I have a cluster consisting of two ESXi hosts. 188 on host 192. vCLS provides a mechanism that allows VMware to decouple both vSphere DRS and vSphere HA from vCenter Server. To avoid resetting virtual machines repeatedly for nontransient errors, by. vSphere Cluster HA provides high availability for virtual machines by pooling the virtual machines and the hosts they reside on into a cluster. a few virtual machines are showing this. Advanced features are what really add value to vSphere and help distinguish it from its competitors. simplified chinese. This monitor tracks the vCenter alarm that alerts when vSphere HA failed to failover a virtual machine. Solution. RED Status: VM. Check if vCenter Server was just installed or updated. Select vSphere Availability in the Services section of the Configure page for your cluster. Uncheck “Power on the virtual machine after recovery” in the last step of the recovery wizard. You may wonder why VMware. Symptoms Following alert is observed on vCenter: Resolution This alert is triggered whenever a High Availability primary agent declares a host as dead. Click Add. This monitor tracks the vCenter Server alarm triggered when a vSphere HA virtual machine fail over fails. With HA, vSphere can detect host failures and can restart virtual machines. 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. esxi41. Alarm name. You will see these options for a Host Isolation response: Shutdown – This option performs a clean shutdown of the virtual machine. Click on the EDIT. 32. 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). One of them (say Host3) just exit Maintenance Mode. 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. A host ist not mandatory to be a physical server, I could create a host in a virtual mashine. 2 by reading the release notes!I'm testing esxi 7 and vsphere 7. The correct answer is: Virtual Machine consolidation Needed status – Default alarm that is triggered when VM consolidation needed status is set, No compatible host for Secondary VM – Default alarm to monitor if no compatible hosts are available to place Secondary VM, Timed out starting. 0 vCenter where HA did not appear to be functioning correctly. There are various reasons why affected. Everything looks fine except for alerts for all the virtual machines that HA failed to move. A host has stopped working in some form or fashion due to hardware or other issues. 1. Causes. I got the warning from a fail over event last night. We believe that the alarms are false positives and don't want our envirnoment clutter with a bunch of false "alarms. info. Reply. If there is a host failure, Fault Tolerance provides continuous protection for a VM. We will see how virtual machines are recovered from a host that is failed. VMware vSphere HA (High Availability) is a failover feature that protects your VMware VMs and applications running in your virtualized IT environment from system outages or failures. Take the virtual machine snapshot.