Each virtual machine has its own operating system, memory, applications, and network stack. Installing VMware server software on a system lets you run a mix of applications, with each safely isolated in its own virtual machine. You no longer incur the expense of dedicated physical machines, so now it's economical to run those applications together on more scalable and reliable hardware. The VMware server products have other features to help you cope with unreliable server applications. The web-based management interface lets you check the status of a virtual machine at a glance to verify that it running.
Graphical indicators make it easy to identify runaway CPU or memory usage.
If a server virtual machine is unresponsive, you can reset it at the click of a mouse. The VMware Server Perl API lets you automate the detection and restarting of crashed virtual machines, so end-user interruption is minimized and system administrators can focus on more productive tasks. GSX Server and ESX Server free your legacy applications to run on newer hardware and operating system platforms that deliver greater reliability and scalability at lower cost.