VMware ESX 4.0 - INSTALLATION GUIDE UPDATE 1 Installation Manual page 132

ESX and vCenter Server Installation Guide
If your license server is operating properly, you might have a problem with your license file.
If your license server is working correctly and your license file is correct, check that you correctly
configured centralized or single-host licensing, as appropriate to your environment.
For detailed troubleshooting and configuration instructions, see the licensing documentation in the
Installation Guide or the Setup Guide for VMware Infrastructure 3.
Applying Licenses
If you cannot apply a license to an asset, the license might not match the currently configured features and
resources. When you assign a license to an asset, the license must be compatible with all the configured
resources and features.
For example, suppose you add 10 ESX hosts to the vCenter Server inventory during the evaluation period.
After the evaluation period expires, you try to assign a Foundation edition license to a vCenter Server system.
The assignment operation fails because the Foundation edition allows a vCenter Server system to manage up
to three hosts only. To correct this issue, you can upgrade the edition or you can remove seven hosts from the
inventory.
As another example, suppose that you configure VMotion and DRS on a cluster of Enterprise edition hosts.
Later, you try to assign Standard license keys to the hosts. This operation fails because the Standard edition
does not include VMotion and DRS. You must assign Enterprise licenses to the ESX hosts or disable VMotion
and DRS. For detailed information about how to disable features, see the VMware Knowledge Base.
Also, make sure you are applying the correct license key, as follows:
To license vCenter Server assets, you must apply a vCenter Server license key.
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To license ESX/ESXi assets, you must apply a vSphere license key.
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About Overriding the Host License Configuration
If the host is managed by vCenter Server, use either the Home > Licensing interface or the Add Host operation
to configure host licensing.
If you use the Configuration > Licensed Features > Edit operation, the host license configuration is overridden
by any license assignment operation that you perform in vCenter Server.
License Expiration
Upon license expiration, the vCenter Server software and the ESX/ESXi software continue to run, but certain
operations stop working.
If a vCenter Server license expires, the managed hosts become disconnected from the vCenter Server inventory,
and you cannot add hosts to the inventory. The hosts and the virtual machines on the hosts continue to run.
By using the vSphere Client to connect directly to the host, you can power on or reset the virtual machines.
After you assign a valid vCenter Server license, you can reconnect all the hosts at once as follows:
1 From the vCenter Server inventory, select the datacenter.
2 Select the Hosts tab.
3 Shift-click or Ctrl-click to select the hosts.
4 Right-click and select Connect.
If an ESX/ESXi host license expires, the virtual machines that reside on the host continue to run, but you cannot
power on the virtual machines or reset them.
132 VMware, Inc.