Cause. vSphere HA provides high availability for virtual machines by pooling them and the hosts that they reside on into a cluster. With the release of vSphere Cluster Services (vCLS) in vSphere 7. vmware. vSphere HA failover can be specified for the following two types of rules: • VM antiaffinity rules force specified VMs to remain apart during failover actions. Deselect the Turn On vSphere HA option. To restart a Secondary VM, vSphere HA requires that the Primary VM be running on a host that is in the same partition as the one containing the vSphere HA primary host responsible for the FT pair. Resolution. HA failover does not occur after setting Traffic Type option on a vmknic to support witness traffic. 2 to 2. Cluster. vSphere HA is failed over the operation in progress in the cluster in data center. By following the previous articles, you will gain a comprehensive understanding of how High Availability (HA) functions and acquire the necessary guidance to configure and manage your vSphere HA effectively. VxRail: "vSphere HA failover in progress" warning message seen in vSphere Web client. Illustrates how to reconfigure HA Cluster to ADD specified advanced option, if it. Click vSphere HA located under Services. You absolutely should not be using RAID0 and you're misunderstanding how HA works. To confirm exiting the simplified configuration workflow, click Continue. Vmware 6. Causes. . vc. Click on [Browse] to select the location of the cluster. 7 I found that just turning off Host Monitoring then back on in the Edit Cluster Settings dialog (de-select "Enable Host Monitoring", click OK, then go back in to Edit Cluster Settings and re-select "Enable Host Monitoring" and click OK) cleared this message and was quick to execute - didn't ne. In the vSphere Client, click Menu and select Hosts and Clusters. ) A. Step 2: vSphere HA is turned ON, toggle vSphere HA to OFF and wait for all hosts to complete unconfigured for HA. Resolution. 0 or later version. 11-15-2012 06:24 AM. A vSphere HA failover is in progress. If you select Disabled, this setting turns off host monitoring and VMs are not restarted when host failures occur. 0 and vSAN 6. This just makes sure you can disable and enable much. Click OK. Select the Configure tab. “vSphere HA” is a cluster feature that is reactive: taking action to make an application available again. HA interacts directly to the ESXi HA Agent and will. vSAN is tightly integrated with VMware vSphere High Availability™. failover. When I try to configure vCenter HA, I'm getting the. vmware. Click Events. ClusterFailoverInProgressEvent|vSphere HA failover operation in progress in cluster {computeResource. Cause. For more information, see VMware High Availability configuration issues when an iSCSI Service Console is on the same network (1003789). When a management network failure occurs for a vSphere HA cluster, a subset of the cluster's hosts might be unable to communicate over the management network with the other hosts. A failover cluster provides automatic failover of VMs from failed hosts to healthy hosts within a cluster. Earn Credits. You. Select cluster object. Unselect Turn on vSphere HA, if it is selected. 1 Solution Troy_Clavell Immortal 02-14-2012 11:51 AM are you running vCenter5 by any chance? If so, check your alarms. vcha. If the slot size appears too high, click on the Resource Allocation tab of the cluster and sort the virtual machines. Resolution. vSphere HA is failed over the operation in progress in the cluster in data center. Learn how to ensure business continuity and protect your virtual machines from failures with vSphere Availability, the latest guide from VMware. VxRail: "vSphere HA failover in progress" warning message seen in vSphere Web client. To disable/enable the vSphere HA in the vSphere Web Client:vSphere HA failover in progress Monitors the failover progress of vSphere High Availability. Tom HA. Cause. In a vSphere High Availability (vSphere HA) cluster, which action does vSphere HA take when the VM Monitoring service does NOT receive heartbeats from a virtual machine (VM) in the cluster? (Choose the best answer. The article provides steps for resolving this alert. If the. vSphere HA is failed over the operation in progress in the cluster in data center. External. VMware ESXi IssuesPlace orders quickly and easily; View orders and track your shipping status; Create and access a list of your products; Manage your Dell EMC sites, products, and product-level contacts using Company Administration. "vSphere HA failover operation in progress in cluster CGI_Test_Cluster in datacenter Bremen: 1 VMs being restarted, 1 VMs waiting for a retry, 0 VMs waiting for resources, 0 inaccessible vSAN VMs". Perform Backup and Restore OperationsIf the discover devices storage operation is still in progress, it prevents the last sub-step of the reprotect workflow synchronize storage to finish in time. " at the cluster level. If this solution is not possible, consider using a different vSphere HA admission control policy, such as reserving a percentage of cluster resource for failover. The first five hosts added to the cluster are designated as primary hosts, and all subsequent hosts are Place orders quickly and easily; View orders and track your shipping status; Create and access a list of your products; Manage your Dell EMC sites, products, and product-level contacts using Company Administration. Known Issues HA. vmware. vSphere HA Cluster (& ESXi hosts) Reconfiguration utility. Thank you. 0 U3b are no longer available for download due to several critical issues identified in them. If any of the nodes fails, the cluster is considered to be in a degraded state. A dialog offers you the option to force a failover without synchronization. x (2004401). Make the vSAN network changes. VxRail: "vSphere HA failover in progress" warning message seen in vSphere Web client. If either site fails, vSAN uses the storage on the other site. 1. Steps to fix vSphere HA failover operation in progress issue. During HA failover, we are able to access our VMS & Hosts, then why its occurring?. Tom Cluster config Issue: vSphere HA initiated a failover action on 1 virtual machines in cluster LabCluster on datacenter DC01. A vCenter HA cluster supports two types of failover. Purpose. succeeded : info : Failover cannot proceed when cluster is in disabled mode : Failover cannot proceed when cluster is in disabled mode : com. vc. Cluster. It also performs checks and makes recommendations. Host failures the cluster tolerates. 384GB of RAM. Step 5. The Skip Quickstart button prompts you to continue configuring the cluster and its hosts manually. Setup for Windows Server Failover Cluster in VMware vSphere 7. Cause. Workaround: Disable vSphere HA before performing vMotion, VM creation, or powering on VMs. This simplifies administration of an OpenEdge database in a clustered environment. Insufficient vSphere HA failover resources I have a cluster consisting of two ESXi hosts. Disable vCenter HA : Deactivates replication and failover. once DNS is confirmed, you can reinstall the HA agents by right clicking the Cluster --> edit settings --> Uncheck DRS/HA checkboxes --> OK. . vSphere makes it possible to reduce planned downtime, prevent unplanned downtime, and recover. Creating a vSphere HA Cluster 33 vSphere HA Checklist 33 Create a vSphere HA Cluster in the vSphere Client 34 Create a vSphere HA Cluster 36 Configuring vSphere Availability Settings 37 Configuring Responses to Failures 38 Configure Proactive HA 41 Configure Admission Control 42. 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. vSphere HA will retry if the maximum number of attempts has not been exceeded. Resolution. Go to the Configure tab and click vSphere Availability and Edit. Creating a vSphere HA Cluster vSphere HA operates in the context of a cluster of ESXi (or legacy ESX) hosts. vcha-reset-primary. 0 Update 2, you can run confidential vSphere Pods, keeping guest OS memory encrypted and protected against access from the hypervisor, on a Supervisor Cluster in vSphere with Tanzu. You can use vSAN as the shared storage for a vSphere HA cluster. Best practice: nThe reason is that if one of the two hosts is placed into maintenance mode there is no failover host left available in the cluster. When vSphere HA or Fault Tolerance take action to maintain availability, for example, a virtual machine failover, you can be notified about such changes. Tom A partition is extremely uncommon in normal environments but may happen in a stretched cluster. vSphere High Availability cluster only supports ESXi 6. The message cannot be removed. vSphere HA guarantees the restart only when it has a cluster quorum and can access the most recent copy of the virtual machine object. HA will take the highest reserved memory and the highest reserved CPU to decide on the size of 1 'slot'. 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. Cause. 5, currently we are facing one problem in our Cluster its showing ''Insufficient resources to satisfy HA failover level on cluster ''. name} in datacenter {datacenter. Replication and failover no longer are provided. Currently with VxRail 4. Step 2:The number of hosts in a cluster will affect consolidation ratios. Click the Configure tab. By following the previous articles, you will gain a comprehensive understanding of how High Availability (HA) functions and acquire the necessary guidance to configure and manage your vSphere HA effectively. Enable high availability when performing some procedures, such as replacing hardware. With HA, data stored in the primary node is always 100% backed up on the replica node. Reduce the planned downtime for common maintenance operations. Run the following command. VMware vSAN 6. > Bind Device. vc. Changing the default timeout for failure and isolation detection. Click Yes to start the failover. What is vSphere Cluster Services (vCLS) vSphere Cluster Services (vCLS) is a new feature in vSphere 7. Cluster. Step 2: Create a cluster. Each host in the cluster functions as a primary host or a secondary host. . vSphere HA is failed over the operation in progress in the cluster in data center. We now have a situation where the main Cluster is flagging the error; "Insufficient resources to satisfy HA failover level on cluster" The cluster has 6 hosts, there's plenty of headroom. And while there’s ways to increase availability for vCenter Server, think about vSphere High Availability (HA) and vCenter Server High Availability (VCHA), its. Click OK and wait for the cluster to reconfigure. 5 or 6. The default URL is:Note: The cluster resources percentage option for admission control also checks that there are at least two vSphere HA-enabled hosts in the cluster (excluding hosts that are entering maintenance mode). Important. After a vSAN cluster fails with a loss of failover quorum for a virtual machine object, vSphere HA might not be able to restart the virtual machine even when the cluster quorum has been restored. After a while the follow event appears: "vSphere HA. TomHA. Select your cluster, Hosts and Clusters; Right click the cluster and select Settings; Under Services select vSphere Availability Or go to Cluster > Configure > Services > vSphere Availability. HA. Make sure HA datastore heartbeats are not enabled. vSphere HA configured failover. Resolutions. To create a VM-host affinity rule, select the desired cluster in the vSphere Web Client. (Optional) Examine the vSphere HA settings, which are optimized for VMware Cloud on AWS. vSphere HA can also monitor guest operating systems and automatically reboot a virtual machine in the event of aThe vCenter High Availability architecture uses a three-node cluster to provide availability against multiple types of hardware and software failures. When he kills hostd on the host running the HA master role he gets warnings: vSphere HA initiated a virtual machine failover action in cluster <name> in datacenter <name> " folowed by. Upon host failure, VMs from the failed host are restarted on other Hyper-V hosts in the cluster. Then re-enable vSphere HA. Right-click the cluster and click Settings. Failover succeeded : Failover succeeded : com. Complete the Failover wizard and depending on the source and destination sites configure the different failover settings for the selected workloads. Click Settings in the context menu. When you create a vSphere HA cluster, a single. vSphere Cluster HA provides high availability for virtual machines by pooling the virtual machines and the hosts they reside on into a cluster. Thank you. You can configure vSphere Lifecycle Manager to remediate hosts in parallel. For details please see vSphere Availability. vmware. You must create a cluster, populate it with hosts, and configure vSphere HA settings before failover protection can be. If a node fails, the server cluster transfers the groups that were being hosted by the node to other nodes in the cluster. Perform a vSphere Replication recovery of the virtual machine. Click Add and type the name of the advanced option in the text box. HA. This virtual machine resides on a different host in the cluster and runs in virtual lockstep with the primary virtual machine. The most recent. Select the Hosts and Clusters view. With VMware vSphere Replication™, quiescing of the virtual machine might fail, but replication continues and notifications will be observed in the VMware vSphere Web Client. Right-click on the cluster > ClusterFeatures > HA vSphere > select Disable: 'allow the VM Power on operation that violate constraints of availability. This knowledge base article addresses the alert message “vSphere HA failover operation in progress” that may appear at the cluster level. Admission Control/Host failures cluster tolerates: 1. VxRail: "vSphere HA failover in progress" warning message seen in vSphere Web client. Using the vSphere Web Client. In your case, 2GB is 1 slot. With the 64 hosts/6,000 VMs inventory, the total time is around 460 seconds (that is, 7 minutes and 40 seconds), with about 30-50 seconds for HA to get into action. VxRail: "vSphere HA failover in progress" warning message seen in vSphere Web client. How to remove VMware error Message - HA Failover operation in ProgressSUBSCRIBE & CLICK THE BELL! My Socials: Julius D. Select the desired VM DRS group to which you want to apply your rule. ”. Click vSphere HA. My advice would be to make sure there are no long running tasks on a host in the cluster like a snapshot removal for example as the HA state change task will not complete until all tasks are finished. vSphere HA unsuccessfully failed over <virtual machine> on <slave hostname> in cluster HA_DRS_Cluster in Datacenter. x (2004401). When vSphere HA is enabled for a cluster, all active hosts (that are not in standby,. vc. In most cases, performing synchronization first is best. A partition is extremely uncommon in normal. vSphere HA failover operation in progress in cluster VxRail-Cluster in datacenter VxRail-Datacenter: 0 VMs being restarted, 3 VMs waiting for a retry, 0 VMs waiting for resources, 0 inaccessible vSAN VMs. vSphere HA provides high availability for virtual machines by pooling the virtual machines and the hosts they reside on into a cluster. VMware-vCenter-Server-Appliance-7. After the failover finishes, you must restart the remediation task on the new node. 7 ESXi 6. There are many great benefits included with the VMware vSAN iSCSI service in VMware vSphere 6. Cluster. To enable the Bash shell, enter shell at the appliancesh prompt. To disable/enable the vSphere HA in the vSphere Web Client:Failover Clusters provides a simple command-line interface, PROCLUSTER, to your operating system’s clustering software. Best Practices for VMware vSphere256 High Availability. If the Witness node recovers from the failure, follow these steps. you have set your cluster to tolerate 1 failure, but if all your VMs (8 from each host) were using 1 'slot' you'd get 16 VMs x 2GB = 32GB. Right-click the cluster and click Settings. Depending on whether or not Enhanced vMotion Compatibility (EVC) is activated, DRS behaves differently when you use vSphere Fault Tolerance (vSphere FT) virtual machines in your cluster. Select Show cluster entries in the dropdown. vSphere HA is failed over the operation in progress in the cluster in data center Cause . look for pending recommendations and approve the recommendations so that vSphere HA failover can proceed. Under Settings, select vCenter HA and click on the Configure button. You. Cluster. In 6. vSphere proactive HA will detect hardware conditions of a host and allow you to evacuate the VMs before the issue causes a vSphere HS failover in progress. Resolving Failover Failures When a Passive node does not become the Active node during a. To disable/enable the vSphere HA in the vSphere Web Client: Log in to the vSphere Web Client. 2. Once all Hosts have been unconfigured for HA, check "Turn on VMware HA". How can I get rid of this error? vSphere HA failover operation in progress in cluster TGCSNET-Vcenter1-Cluster in datacenter Datacenter-TGCSNET: 0 VMs being restarted, 5 VMs waiting for a retry, 0 VMs waiting for resources, 0 inaccessible vSAN VMs. There are various reasons. Cannot find vSphere HA primary agent : Monitors whether vCenter Server is able to connect to a vSphere High Availability primary agent. Using the vSphere Web Client. This patch is applicable to vCenter Server. vSphere HA virtual machine failover unsuccessful. Configure alarms in vCenter Server to be triggered when these actions occur, and have alerts, such as emails, sent to a specified set of. Expand the vSphere cluster and navigate to the transport nodes that are in a partial success state. Thank you. You can also Initiate. vSphere High Availability (HA) failover resources are insufficient To resolve this problem, use similar CPU and memory reservations for all virtual machines in the cluster. Workaround: None. vRealize Operations supports high availability (HA). By default, the alarm is triggered by the following events: com. Go to Config Tab & choose vCenter HA. The task is working as expected. Using the vSphere Web Client. Changing your network hardware or networking settings can interrupt the heartbeats that vSphere HA uses to detect host failures, which might result in unwanted attempts to fail over virtual machines. HA. And restore the HA cluster configuration, incase there is a failure. Step 6: Try to delete the datastore again. 2CPUs at 2. also vms are reporting. By default, VMware HA prepares for the worst-case scenario of the largest, most powerful host in. vSphere with Tanzu relies heavily on existing vSphere features for mitigating common availability disruptions, such as a single-host hardware failure. How to fix it. Bind Devices: Access to AOMEI Cyber Backup web client, navigate to Source Device > VMware > + Add VMware Device to Add vCenter or Standalone ESXi host. For example, you have eight compute nodes, and you have to decide whether to deploy two 4-node clusters or one 8-node cluster. To disable/enable the vSphere HA in the vSphere Web Client:1. comVxRail: "vSphere HA failover in progress" warning message seen in vSphere Web client. vSphere HA will retry if the. Symptoms. VxRail: "vSphere HA failover in progress" warning message seen in vSphere Web client. We measured the time from the point vCenter Server VM stopped responding, to the point vSphere Web Client started responding to user activity again. Determine whether the virtual machine network adapters are connected to a corresponding port group. In some cases the HA enablement task fails with " Cannot find vSphere HA master agent ". Overview: This service builds on the replication capability of vSAN and the high-availability (HA) features of VMware vSphere ® High Availability when used in a stretched cluster configuration. HA allows losing only one data node for the cluster to remain functional. HA. When trying to enable HA, the installation of the HA agent (FDM) starts, and the status switches into "Waiting for cluster election to complete", only to fail and start over again. Automatic failover The Passive node attempts to take over the active role in case of an Active node failure. ConnectedToMaster :. If HA is not enabled in your cluster, go to the Configure tab of your cluster and then to the vSphere Availability tab available in Services. The reverse process, failback, occurs when the failed node becomes active again and the groups that were failed over to the other nodes are transferred back to the original node. Resolution. With dedicated failover hosts admission control, when a host fails, vSphere HA. The VMs which appear to be missing typically are running in the other location, as typically the other location will have access to that particular datastore. These clusters are running SQL server with the idea of HA for availability. ensure your DNS is working properly. You can configure vSphere HA to designate specific hosts as the failover hosts. With HA, vSphere can detect host failures and can restart virtual machines. Thank you. The challenge being that cluster services, like the vSphere Distributed Resource Scheduler (DRS), depend on vCenter Server availability for its configuration and operation. I am using cluster resource % (50) as recommended for vsan stretched clusters. x, see Comparing VMware HA 4. To disable/enable the vSphere HA in the vSphere Web Client:During remediation, the hosts in the cluster are remediated in sequence by default. Right-click the cluster and click Settings. Search for events with vSphere HA in the description. 07-27-2023 01:09 AM. As a result, VMware vSphere HA is configured to tolerate the failure of a single host. Thank you. A clustered task is a Task Scheduler task that is registered on all cluster nodes. Select Configure > Under Services, vSphere Availability > Edit 4. Cause. If restarting the virtual machines is not possible, for example the failover hosts have failed or have. Do not turn on vSphere HA or vSphere DRS. I'm trying to configure vCenter HA in two separate clusters. How can I get rid of this error? vSphere HA failover operation in progress in cluster TGCSNET-Vcenter1-Cluster in datacenter Datacenter-TGCSNET: 0 VMs being restarted, 5 VMs waiting for a retry, 0 VMs waiting for resources, 0 inaccessible vSAN VMs. The first five hosts added to the cluster are designated as primary hosts, and all subsequent hosts areVxRail: "vSphere HA failover in progress" warning message seen in vSphere Web client. HA Admission Control configuration can be seen in the pics attached. In the left pane of the Cluster Settings dialog box, select VM Monitoring. How can I check which resource doesnt enough, or which resource the HA waiting for? Which settings should I use in this situation? com. Cause. After the failover, you can verify that the Passive node has the role of the Active node in the vSphere Client. You can click Edit to enter Maintenance Mode, Deactivate, or Remove vCenter HA. To do this you need to create another cluster as a test. Procedure. Verify that the VMware HA cluster is not corrupted. Virtual machine has disk I/O read latency problem. 7 HA Cluster with an Embedded Platform Services. How vSphere HA Works. Cluster. HA. VMware has qualified vCenter high availability with vCenter 5. Resolution. When you change the networking configuration on the ESXi hosts themselves, for example, adding port groups, or removing vSwitches,. Below are other key benefits of the solution. How can I get rid of this error? vSphere HA failover operation in progress in cluster TGCSNET-Vcenter1-Cluster in datacenter Datacenter-TGCSNET: 0 VMs being restarted, 5 VMs waiting for a retry, 0 VMs waiting for resources, 0 inaccessible vSAN VMs. we are doing vSphere HA tests in our infrastructure, in a ESXi 5. A Stand-Alone deployment might look something like this. Using the vSphere Web Client. In addition, the vSphere HA agent on the Primary VM’s host must be operating correctly. Provide automatic recovery in cases of failure. vSphere HA is failed over the operation in progress in the cluster in data center. Place orders quickly and easily; View orders and track your shipping status; Create and access a list of your products; Manage your Dell EMC sites, products, and product-level contacts using Company Administration. failuredetectiontime . Thank you. TomHA. As you can see in the screenshot above, the wizard looks quite similar in both management clients. Click vSphere HA located under Services. Right-click the ESXi host and select Connection > Connect. Multiple partitions can occur in a cluster. vmware. Prerequisites for Upgrading vCenter Server High Availability Environments To ensure a successful upgrade of vCenter Server in a high availability (HA) environment, your environment must meet certain prerequisites before running the upgrade. The failed VM stays disconnected until the host is rebooted and back online 😕 It doesnt get reconnected or restarted on another host. vSphere HA is failed over the operation in progress in the cluster in data center. Tom HA. 0 I see a warning "vSphere HA failover operation in progress in cluster XXX in datacenter DC YYY: 1 VMs being restarted, 0 VMs waiting for a retry, 0 VMs waiting for resources, 0 inaccessible Virtual SAN VMs". It is also important to enable host monitoring. No impact. Resolution Using the vSphere Web Client To disable/enable the vSphere HA in the. vSphere HA host status Hello Team, I see more often that on vSphere HA failover in progress on vSphere Cluster, as a workaround disabling/enabling HA will fix the issue. Locate the cluster. . Thank you. HA. 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 . HA. Click vSphere HA located under Services. vSphere 6. Place orders quickly and easily; View orders and track your shipping status; Enjoy members-only rewards and discounts; Create and access a list of your products Updated on 08/23/2022. This just makes sure you can disable and. In the vSphere Web Client, the same notification can be found by selecting the referenced data center and navigating to Issues under the Monitor tab. "vSphere HA failover in progress". Reduce Planned Downtime with vSphere. Click Edit. vSphere Cluster. The Cluster quickstart page appears. ConnectedToMaster: ExtendedEvent: Host connected to a vSphere HA master: com. Task Scheduler integration. Click OK to close the wizard and create an empty cluster. The storage protection levels you can choose and the virtual machine remediation actions. Deselect the Turn On VMware HA option. 5 is protected against multiple types of hardware and software. Configuration. Table 1. Using the vSphere Web Client. After you resolve this condition, vSphere HA should configure correctly. With vSphere, you can: Provide high availability independent of hardware, operating system, and applications. To enable HA repeat the above steps and select Turn on VMware HA option. Decide if you want to. vSphere Availability describes vSphere HA functionality. 2. Requirement: The management servers are pinned to a specific data center but can be failed over to a second data center in the event of an outage. Percentage of cluster resources reserved. Expert 02-14-2012 11:24 AM. 2) is looking oka. prior vSphere 5, HA had a huge dependency on the name resolution. HA rule settings should respect VM-Host affinity rules during failover. A very interesting one is CPU Topology for virtual machine configuration. You can build a vROps Cluster several different ways: Stand-Alone, High Availability (HA), or Continuous Availability (CA). VMware error: vSphere HA failover operation in progress in cluster xxxxxIf you create a DRS affinity rule for your cluster, you can specify how vSphere HA applies that rule during a virtual machine failover. CreateConfigVvolFailedEvent: ExtendedEvent: vSphere HA failed to create a configuration vVol for this datastore and so will not be able to protect virtual. We're running vCenter 7. Monitors the sufficiency of failover cluster resources required for vSphere High Availability. vcha. As a result, VMware vSphere HA is configured to tolerate the failure of a single host. If the Witness node recovers from the failure, follow these steps. 7 I found that just turning off Host Monitoring then back on in the Edit Cluster Settings dialog (de-select "Enable Host Monitoring", click OK, then go back in to Edit Cluster Settings and re-select "Enable Host Monitoring" and click OK) cleared this message and was quick to execute - didn't ne. Actions. Select vCenter HA under settings. Hosts in the cluster are. Click the vSphere HA switcher to enable High Availability. Possible reasons for. When this alarm is triggered, it means that one or more virtual machines failed to get powered on by a host in a cluster protected by HA. The VMs continued to run because all the files they needed to run were already in memory -- though obviously any new read/write operations to the disk would time out and fail. Apply service updates during a maintenance window where no new HCX operations are queued up.