6.0.2

Table Of Contents
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For vCenter Server 5.0, to upgrade to an embedded Platform Services Controller deployment, no
pre-upgrade steps are required.
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For vCenter Server 5.0, to upgrade to an external Platform Services Controller deployment, you
must congure an external Platform Services Controller instance before upgrading vCenter Server.
The Platform Services Controller information is used during the upgrade to register the external
Platform Services Controller with vCenter Server.
3 Verify that the required services have started.
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The vCenter Single Sign-On instance to which you are registering vCenter Server
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VMware Certicate Authority
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VMware Directory Service
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VMware Identity Manager Service
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VMware KDC Service
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tcruntime-C-ProgramData-VMware-cis-runtime-VMwareSTSService
4 Before you install or upgrade a vSphere product, synchronize the clocks of all machines on the vSphere
network.
5 If you do not intend to use vCenter Server 6.0 in evaluation mode, make sure that you have valid license
keys for all purchased functionality. License keys from previous versions of vSphere continue to
support the previous versions, however they do not support vCenter Server 6.0.
If you do not have the license key, you can install in evaluation mode and use the vSphere Web Client to
enter the license key later.
6 Close all instances of the vSphere Web Client.
7 Make sure that no processes conict.
8 Download the installer.
Your environment is ready for the upgrade of your vCenter Server.
Synchronizing Clocks on the vSphere Network
Make sure that all components on the vSphere network have their clocks synchronized. If the clocks on the
machines in your vSphere network are not synchronized, SSL certicates, which are time-sensitive, might
not be recognized as valid in communications between network machines.
Unsynchronized clocks can result in authentication problems, which can cause the installation to fail or
prevent the vCenter Server Appliance vpxd service from starting.
Make sure any Windows host machine on which a vCenter component runs is synchronized with the NTP
server. See the Knowledge Base article hp://kb.vmware.com/kb/1318.
Synchronize ESXi Clocks with a Network Time Server
Before you install vCenter Server or deploy the vCenter Server Appliance, make sure all machines on your
vSphere network have their clocks synchronized.
This task explains how to set up NTP from the vSphere Client. You can instead use the vicfg-ntp vCLI
command. See the vSphere Command-Line Interface Reference.
Procedure
1 Start the vSphere Client, and connect to the ESXi host.
2 On the  tab, click Time .
Chapter 3 Before Upgrading vCenter Server
VMware, Inc. 67