You have several ways to access vSphere components through vSphere interface options.

vSphere interface options include:

vSphere Web Client

The vSphere Web Client is a Web application installed on a machine with network access to your vCenter Server installation. The vSphere Web Client is the primary interface for connecting to and managing vCenter Server instances.

vSphere Client

The vSphere Client is installed on a Windows machine with network access to your ESXi or vCenter Server system installation. The interface displays slightly different options depending on which type of server you are connected to. A single vCenter Server system or ESXi host can support multiple, simultaneously connected vSphere Clients.

vSphere Command-Line Interface

A command-line interface for configuring an ESXi host.

See Starting and Stopping the vSphere Components for information and instructions about starting and stopping ESXi hosts and vCenter Server.