Download the .iso installer for the vCenter Server Appliance and Client Integration Plug-in.
- Download the vCenter Server Appliance installer from the VMware Web site at https://my.vmware.com/web/vmware/downloads.
- Confirm that the md5sum is correct.
See the VMware Web site topic Using MD5 Checksums at http://www.vmware.com/download/md5.html.
- Mount the ISO image to a Windows virtual machine or physical server different from the source vCenter Server or vCenter Single Sign-On. Mount the ISO image to the Windows virtual machine or physical server on which you want to install the Client Integration Plug-In to migrate to the vCenter Server Appliance.
If you are using a Windows virtual machine, you can configure the ISO image as a datastore ISO file for the CD/DVD drive of the virtual machine by using the vSphere Web Client. See vSphere Virtual Machine Administration.