The bundled Microsoft SQL Server 2008 R2 Express database package is installed and configured when you select the bundled database during vCenter Server installation or upgrade.

To install the bundled Microsoft SQL Server 2008 R2 Express database, Microsoft Windows Installer version 4.5 (MSI 4.5) is required on your system. You can download MSI 4.5 from the Microsoft Web site. You can also install MSI 4.5 directly from the vCenter Server autorun.exe installer.