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Powering on an ESX/ESXi host's virtual machine

Purpose

This article guides you through the different methods of powering on a virtual machine. Alternative methods are useful when there is something preventing the use of one method or when another method is more useful due to particular environmental requirements.

Resolution

Starting a virtual machine via the vSphere Client/Virtual Infrastructure Client connected to vCenter Server/VirtualCenter

To start a virtual machine from vCenter Server/VirtualCenter:
  1. Connect to your vCenter Server/VirtualCenter using the vSphere Client/Virtual Infrastructure Client.
  2. Select the virtual machine you want to power on from inventory.
  3. Right-click on the virtual machine name and click Power On.
  4. Select the virtual machine's Summary tab and click Power On.

    This graphic shows the options available in the virtual machine's Summary tab.


Starting a virtual machine via the vSphere Client/Virtual Infrastructure Client connected directly to an ESX/ESXi host

To start a virtual machine from the vSphere Client/Virtual Infrastructure Client connect directly to an ESX/ESXi host:
  1. Connect to your ESX/ESXi host using the vSphere Client/Virtual Infrastructure Client.
  2. Select the virtual machine you want to power on from inventory.
  3. Right-click on the virtual machine and click Power On.
  4. Select the virtual machine's Summary tab and click Power On

    The following graphic shows the options available in the virtual machine's Summary tab.



    Note: There are not as many options when connecting to an ESX/ESXi host as there are when connecting to a vCenter Server/VirtualCenter.

Note: If you were unable to start the virtual machine from vCenter Server/VirtualCenter but were successful from an ESXi/ESX host, your vCenter Server server service may need to be restarted, see Stopping, starting or restarting the vCenter Server service (1003895).

Starting a virtual machine via the command line of an ESX/ESXi host

To start a virtual machine from the service console of an ESX/ESXi host:
  1. Log into the VMware ESX/ESXi host as the root user.
    • For more information on VMware ESX Service Console, see Unable to connect to an ESX host using Secure Shell (SSH) (1003807).
    • For more information on VMware ESXi Technical Support Mode, see Tech Support Mode for Emergency Support (1003677).
    • For more information on VMware ESXi 4.1 and ESXi 5.0 Technical Support Mode, see Using Tech Support Mode in ESXi 4.1 and ESXi 5.0 (1017910)
  2. To list all running virtual machines and their corresponding VMIDs, run the command:
    #vim-cmd vmsvc/getallvms
  3. Power on the virtual machine using the VMID found in Step 2 and run:
    #vim-cmd vmsvc/power.on
Note: If you are still unable to power on your virtual machine after trying the steps in this article:
  • Gather the VMware Support Script Data. For more information, see Collecting Diagnostic Information in a VMware Virtual Infrastructure Environment (1003689).
  • File a support request with VMware Support and note this KB Article ID in the problem description. For more information, see How to Submit a Support Request.


    Based on VMware KB 1003738

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