Performing a scripted installation is an efficient way of deploying multiple ESXi hosts. The installation script (
ks.cfg) contains the installation and configuration parameters of ESXi. Using a scripted installation, you can make sure you have a similar configuration for your entire infrastructure. This makes it easy for deploying multiple ESXi hosts in a short amount of time.
Make sure that the hardware used is listed in VMware Compatibility Guide (http://www.vmware.com/resources/compatibility/search.php) for ESXi installation, also make sure that the ESXi installer ISO is available, and that the installation script is placed in any one of the following locations: