After you have installed and configured XenServer and XenCenter, you can use XenCenter to install virtual appliances on XenServer. The number of virtual appliances that you can install depends on the amount of memory available on the hardware that is running XenServer.
After you have used XenCenter to install the initial NetScaler virtual appliance (.xva image) on XenServer, you have the option to use Command Center to provision NetScaler virtual appliance. For more information, see the Command Center documentation.
To install NetScaler virtual appliances on XenServer by using XenCenter