In a simple Install, after you install vCenter Single Sign-On, the vSphere Web Client, and vCenter Inventory Service, the installer starts the vCenter Server installation.

Note: vCenter Server 5.5 supports connection between vCenter Server and vCenter Server components by IP address only if the IP address is IPv4-compliant. To connect to a vCenter Server system in an IPv6 environment, you must use the fully qualified domain name (FQDN) or host name of the vCenter Server. The best practice is to use the FQDN, which works in all cases, instead of the IP address, which can change if assigned by DHCP.


  1. (Optional) Enter your license key.

    If you omit the license key, vCenter Server is in evaluation mode, which allows you to use the full feature set for a 60-day evaluation period. After installation, you can enter the license key to convert vCenter Server to licensed mode.

  2. Choose the type of database that you want to use.
    • To use the bundled database, click Install a Microsoft SQL Server 2008 Express instance (for small-scale deployments).

      This database is suitable for deployments of up to 5 hosts and 50 virtual machines.

    • To use an existing database, click Use an existing supported database and select your database from the list of available DSNs. Enter the user name and password for the DSN.

      If your database uses Windows NT authentication, the user name and password fields are disabled.

    Note: A warning might appear that the DSN points to an older version of a repository that must be upgraded. If you click Yes, the installer upgrades the database schema, making the database irreversibly incompatible with previous VirtualCenter versions. See the vSphere Upgrade documentation.
  3. Set the vCenter Server service account information.
    • If you are using a nonbundled database, enter the administrator name and password that you use when you log in to the system on which you are installing vCenter Server.
    • If you are using the bundled SQL Server database, select Use Windows Local System Account.

    You need the user name and password entered here to log in to vCenter Server after you have installed it.

    The Fully Qualified Domain Name field displays the FQDN of the system that you are installing vCenter Server on. The vCenter Server installer checks that the FQDN is resolvable. If not, a warning message appears when you click Next. Change the entry to a resolvable FQDN. You must enter the FQDN, not the IP address.

    Important: Make sure the FQDN that you provide does not change. The system name cannot be changed after deployment. If the system name changes, you must uninstall vCenter Server and install it again.
  4. For each component that you install, accept the default port numbers, or if another service is using the defaults, enter alternative ports.
  5. (Optional) Select Increase the number of available ephemeral ports.
  6. Select the size of your vCenter Server inventory to allocate memory for several Java services that are used by vCenter Server.

    This setting determines the maximum JVM heap settings for VMware VirtualCenter Management Webservices (Tomcat), Inventory Service, and Profile-Driven Storage Service. You can adjust this setting after installation if the number of hosts in your environment changes. See the recommendations in the topic vCenter Server Hardware Requirements.

  7. Click Install.
    Multiple progress bars appear during the installation of the selected components.


The vCenter Simple Install is complete.

What to do next

See After You Install vCenter Server.