Many admins rely on using serial port console connections to manage physical servers. These connections usually provide a non-graphical and hence low-bandwidth remote console approach for administering physical servers. Administrators use physical serial port concentrators to multiplex connections to several hosts. vSphere 4.1 enables support for virtual serial port concentrators to provide similar functionality for virtual machines. The feature allows you to redirect virtual machine’s serial ports over a standard network link using telnet or ssh. This enables solutions such as third-party virtual serial port concentrators, like the new virtual appliance-based Avocent Cyclades ACS 6000, for virtual machine serial console management or monitoring. Providing a suitable way to remote a VM’s serial port(s) over a network connection, and supporting a “virtual serial port concentrator” utility, thus, gives VI administrators a first-class support for the traditional server management approach. Furthermore, these console connections are also considered more secure for virtual machines since the traffic is only on the management network. The Virtual Machine settings user interface has been modified to allow serial port configuration.