The VMware vCenter Server Appliance has been deployed using default settings. What user name and password are used to log in the administrator interface to configure the appliance?
The initial user name and password must be supplied on the first login attempt
The initial user name and password must be supplied during deployment
The initial user name is root and the password is blank
The initial user name is root and the password is vmware
Ref: Page 205 from vsphere-esxi-vcenter-server-50-installation-setup-guide.pdf
Download and Deploy the VMware vCenter Server Appliance
As an alternative to installing vCenter Server on a Windows machine, you can download the VMware vCenter Server Appliance. The vCenter Server Appliance is a preconfigured Linux-based virtual machine optimized for running vCenter Server and associated services.
The vCenter Server Appliance has the default user name root and password vmware.