What Is vSphere Lifecycle Manager and How Does It Upgrade ESXi Hosts?

vLCM works from a desired state for the ESXi hosts. You build that state from components such as ESXi base images, vendor add-ons, firmware packages and driver updates. vLCM then checks hosts for compliance on an ongoing basis, and a host that drifts from the desired image or its assigned baselines can be remediated automatically.

Its main capabilities are compliance checks, remediation pre-checks, staged updates that shorten maintenance time, and cluster-level image management. In image-managed clusters, vLCM enforces the same configuration on every host, which keeps hardware compatible and software consistent.

To upgrade ESXi from version 7 to 8 with vLCM, administrators typically:

1. Log in to vCenter and navigate to the Updates section of the cluster. 2. Select Image management and choose the desired ESXi 8 base image. 3. Save the image configuration. 4. Run a compliance check. 5. Start remediation to apply the image.

During remediation, the hosts enter maintenance mode, apply the update and reboot automatically. When it finishes, the cluster runs ESXi 8 with a standardized configuration.

In short, vLCM brings lifecycle operations into one place, keeps hosts consistent and cuts the manual work of managing ESXi infrastructure.

Q1: Is vLCM installed separately?

No. It runs as a service within vCenter Server.

Q2: What is the difference between image-based and baseline-based management?

Image-based management enforces a full desired host state, while baseline-based management applies selected patches and updates.

Q3: Does upgrading with vLCM require downtime?

Hosts enter maintenance mode and reboot, so workloads must be migrated off them beforehand.

Q4: Can vLCM manage firmware updates?

Yes. When it is integrated with supported hardware managers, it can include firmware and driver updates in the desired image.