iTechGuides is reader-supported. When you buy through links on our site, we may earn an affiliate commission. As an Amazon Associate I earn from qualifying purchases. Learn more
VMware provides lifecycle-management tools to plan and apply updates to ESXi hosts and clusters, but the available sources do not establish that VMware patch volume has surged or that the company calls it a “flood.” The main tool is vSphere Lifecycle Manager (vLCM); for broader VMware Cloud Foundation updates, VMware describes an orchestration layer that coordinates different update methods. Whether updates can avoid maintenance mode depends on the exact patch, product version, and compatibility guidance.
Which VMware tool manages patches?
For ESXi hosts and clusters, the central tool is vSphere Lifecycle Manager (vLCM). Broadcom says VMware introduced vLCM in vSphere 7.0 to replace vSphere Update Manager. It manages lifecycle operations such as patching, updating, and upgrading hosts; VMware’s vSphere 8.0 Update 2 performance guidance also describes scope that includes firmware, VMware Tools, and virtual hardware.
VMware Cloud Foundation (VCF) has a broader, layered approach. In a June 30, 2026 blog post, VMware described VCF 9.1 Fleet Lifecycle as orchestrating updates across the management stack, with different mechanisms for different change types. That is VMware’s product description, not independent evidence of measured patch speed or workload impact.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Baselines or desired-state images?
vLCM offers two management models. Baselines define updates to apply to hosts; images define the desired host state, including ESXi version, firmware, and drivers. With an image, administrators specify the intended configuration and vLCM checks and enforces host conformity to it.
#1 Best Overall
| Model | How it works | Release context |
|---|---|---|
| Baselines and baseline groups | Identify updates to apply to hosts, following the model used by vSphere Update Manager. | Broadcom says baseline-based patching was deprecated in vSphere 8.0 and encourages migration to images. VMware’s vSphere 8.0 Update 2 performance document nevertheless says Lifecycle Manager continued to support baselines and baseline groups in that release. |
| vLCM images | Define desired host state, including ESXi version, firmware, and drivers, then manage hosts against that specification. | Introduced with vLCM in vSphere 7.0; Broadcom encourages moving to image-based management. |
These statements describe different things: Broadcom’s migration direction and the functionality documented for a particular vSphere 8.0 Update 2 release. Do not assume that every vSphere 8 deployment has already lost baseline support. Check the documentation for your exact release and plan any transition against the host, firmware, and driver requirements in your environment.
Can vLCM patch ESXi without downtime?
Not in every case. VMware’s July 11, 2024 article on vSphere Live Patch describes a way to apply eligible patches without the usual maintenance-mode workflow. But VMware said some changes—notably VMkernel patches in the article’s guidance—were not initially eligible and still required maintenance mode and VM evacuation.
The article also says Lifecycle Manager indicates which prior build is compatible with a Live Patch. Treat eligibility as patch- and version-specific: consult current vLCM compatibility information for the exact host build and patch before scheduling work. Live Patch is not a blanket guarantee of zero downtime, and the 2024 article should not be read as a current eligibility list.
Do these 3 things before closing this tab:
1Scan for outdated or missing drivers - takes under a minute2Clear out junk files and repair common Windows errors3Fix the driver behind crashes, sound loss and screen glitchesHow VCF 9.1 divides patch work
VMware’s June 30, 2026 description of VCF 9.1 presents patching as an orchestrated workflow across management-stack layers, rather than one universal patch mechanism. It assigns different approaches to different update types:
Rank #3
- Security and minor fixes: vCenter Quick Patch.
- Version transitions: Reduced Downtime Upgrade.
- vSphere Supervisor and VMware vSphere Kubernetes Service clusters: rolling updates.
VMware characterizes this design as reducing disruption, but the blog post is not independent performance testing. Operational impact still depends on the update, workload, configuration, and applicable product guidance.
Prepare vLCM to access updates
vLCM needs a configured patch download source to access updates, patches, and image definitions. Broadcom’s configuration guidance explains how to update that source. Confirm the source configuration as part of deployment and troubleshooting; do not treat a service restart mentioned in a specific troubleshooting procedure as a routine patching step.
- Identify the vSphere release and the hosts or clusters in scope.
- Choose the management model supported by that release: baselines where applicable, or image-based desired state.
- Verify the configured patch download source and confirm vLCM can retrieve the needed updates and image definitions.
- Check the specific patch’s compatibility and Live Patch eligibility, if avoiding maintenance mode is important.
- For updates requiring maintenance mode, plan host evacuation and the maintenance window; for VCF, follow the workflow assigned to that update type.
Does VMware patch output amount to a “flood”?
The product sources describe patch-management tools and workflows, but do not provide a named statistic showing the number of VMware patches or growth in patch volume. They also do not establish that VMware itself characterized its updates as a “flood.” The defensible conclusion is narrower: VMware and Broadcom provide lifecycle-management capabilities for host and cluster updates, while VCF adds orchestration across more of the platform stack.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
