When you install or upgrade vCenter Server and Platform Services Controller on Windows, the installer does a pre-check, for example, to verify that enough space is available on the virtual machine or physical server where you are installing or upgrading vCenter Server, and verifies that the external database, if any, can be successfully accessed.
When you install Platform Services Controller as an embedded or external instance, vCenter Single Sign-On is installed as part of Platform Services Controller. During the installation of an external Platform Services Controller, the installer provides you with the option to join an existing vCenter Single Sign-On server domain. During the installation of vCenter Server with an external Platform Services Controller, the installer prompts you to join an existing vCenter Single Sign-On server domain. When you provide the information about the vCenter Single Sign-On service, the installer uses the administrator account to check the host name and password, to verify that the details of the vCenter Single Sign-On server you provided can be authenticated before proceeding with the installation process.
The pre-install checker performs checks for the following aspects of the environment:
- Windows version
- Minimum processor requirements
- Minimum memory requirements
- Minimum disk space requirements
- Permissions on the selected install and data directory
- Internal and external port availability
- External database version
- External database connectivity
- Administrator privileges on the Windows machine
- Any credentials that you enter
Additionally, the pre-install checker verifies if Universal C Runtime is installed. This is a Microsoft Windows operating system component that enables CRT functionality on the Windows OS. If Universal C Runtime is not installed, you receive an error message.
For information about the minimum storage requirements, see Storage Requirements for vCenter Server and Platform Services Controller on Windows. For information about the minimum hardware requirements, see Hardware Requirements for vCenter Server and Platform Services Controller on Windows.