The deployment method and the management of a hardware support manager plug-in is determined by the respective OEM.
The hardware support manager that Dell provides is part of their host management solution, OpenManage Integration for VMware vCenter (OMIVV), which you deploy as an appliance.
The hardware support manager that HPE provides is part of their management tool, iLO Amplifier, which you deploy as an appliance.
Deploying and Configuring Hardware Support Managers
Regardless of the hardware vendor, you must deploy the hardware support manager appliance on a host with sufficient disk space. Hardware support manager appliances are distributed as OVF or OVA templates. You might deploy them on any host in any vCenter Server server.
After you deploy the appliance, you must power on the appliance virtual machine, log in to the appliance as an administrator, and register the appliance as a vCenter Server extension. Each hardware support manager might register with only one or multiple vCenter Server systems.
A vCenter Server plug-in UI might become available in the vSphere Client after you deploy a hardware support manager appliance, but the hardware support manager might also have a separate user interface of its own. In vSphere 7.0, both OMIVV and iLO Amplifier have a vCenter Server plug-in UI, which helps you configure and work with the respective hardware support manager.
Each hardware support manager has its own mechanism of managing the actual firmware packages and making firmware add-ons available for you to choose.
The successful integration between the hardware support manager and vSphere Lifecycle Manager might require a specific configuration of the hardware support manager. For example, with OMIVV, you must first create a connection profile. Then, you must create a cluster profile and associate it with a cluster before you can add a firmware add-on from Dell to the image for that cluster. For detailed information about deploying, configuring, and managing hardware support managers, refer to the OEM-provided documentation.