6.5.1

Table Of Contents
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Verify Network Prerequisites Before Upgrading
Verify that your network is set up correctly and meets connectivity prerequisites for upgrading
vCenter Server.
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Verify Load Balancer Before Upgrading vCenter Server
If you are using a load balancer for high availability for vCenter Single Sign-On or
Platform Services Controller, you must verify that it is supported and configured correctly before
upgrading to vCenter Server 6.5.
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Prepare ESXi Hosts for vCenter Server Upgrade
Before upgrading to vCenter Server 6.5, you must prepare your ESXi hosts.
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Verify Preparations Are Complete for Upgrading vCenter Server
Verify that all components of your environment are ready to upgrade vCenter Server.
Verify Basic Compatibility Before Upgrading vCenter Server
Verify that all components meet basic compatibility requirements before upgrading vCenter Server.
Prerequisites
Verify that your system meets the hardware and software requirements. See vCenter Server for Windows
Requirements and System Requirements for the New vCenter Server Appliance and Platform Services
Controller Appliance
If you have solutions or plug-ins, check the VMware Product Interoperability Matrix. See
http://www.vmware.com/resources/compatibility/sim/interop_matrix.php
Procedure
1 The installation path of the previous version of vCenter Server must be compatible with the
installation requirements for Microsoft Active Directory Application Mode (ADAM/AD LDS).
The installation path must contain only ASCII characters. Extended ASCII and non-ASCII characters
are unsupported.
If your previous version of vCenter Server does not meet this requirement, you must perform a fresh
installation of vCenter Server.
2 Verify that the vCenter Server system is not an Active Directory primary or backup domain controller.
3 Update any ESXi 5.0 or ESXi 5.1 hosts to version 5.5.
4 If you have ESXi 5.0 or ESXi 5.1 hosts that you choose not to upgrade, you must remove them from
the vCenter Server inventory.
vSphere Upgrade
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