For a given hardware vendor, firmware updates are available in a special vendor depot, whose content you access through a software module called a hardware support manager. Unlike vendor add-ons, firmware and drivers add-ons are not distributed through the official VMware online depot or as offline bundles available at my. The firmware and drivers add-on might also contain the necessary drivers. The firmware and drivers add-on is a vendor-provided add-on that contains the components that encapsulate firmware update packages. To apply firmware updates to the hosts in a cluster that you manage with a single image, you must include a special type of add-on, the firmware and drivers add-on, in the image and remediate the cluster to apply the image to all hosts. Firmware updates are not available for clusters that you manage with baselines. Starting with vSphere 7.0, you can easily update the firmware in any cluster that you manage with a single image. For non- vSAN clusters, firmware updates had to be manual. In earlier vSphere releases, you could perform firmware updates on vSAN clusters by using system-managed baselines. With a single operation, you update both the software and the firmware on the host. Using vSphere Lifecycle Manager images simplifies the host update operation. You can use vSphere Lifecycle Manager images to perform firmware updates on the ESXi hosts in a cluster.
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