When you connect directly to a host using the vSphere Client, you can open a console to any of the host's virtual machines, add and remove virtual machines in the host's inventory, and manage virtual machine snapshots.
Edit Virtual Machine Startup and Shutdown Settings You can configure virtual machines running on an ESXi host to start up and shut down with the host. You can also set the default timing and startup order for selected virtual machines. This ability allows the operating system to save data when the host enters maintenance mode or is being powered off for another reason.
Open a Console to a Virtual Machine With the vSphere Client, you can access a virtual machine's desktop by launching a console to the virtual machine. From the console, you can perform activities within the virtual machine such as configure operating system settings, run applications, monitor performance, and so on.
Remove Virtual Machines from a Host Removing a virtual machine from the inventory unregisters it from the host, but does not delete it from the datastore. Virtual machine files remain at the same storage location and the virtual machine can be re-registered by using the datastore browser.
Remove Virtual Machines from the Datastore You use the Delete from Disk option to remove a virtual machine from a host and delete all virtual machine files, including the configuration file and virtual disk files, from the datastore.
Return a Virtual Machine or Template to a Host If you remove a virtual machine or template from a host, but do not remove it from the host’s datastore, you can return it to the host's inventory by using the Datastore Browser.
Using Snapshots To Manage Virtual Machines Snapshots preserve the state and data of a virtual machine at the time you take the snapshot. Snapshots are useful when you must revert repeatedly to the same virtual machine state, but you do not want to create multiple virtual machines.