For full realism, a hypervisor-based lab (Hyper-V, VMware) remains superior. The simulator is best used for or quick refresher before real hands-on.
Unlike a standard Virtual Machine, this wasn't just an operating system. It was a gamified training tool developed by a defunct tech conglomerate in the late 2000s. It was designed to teach sysadmins how to handle catastrophic server failures in a safe, simulated environment. Windows Server 2008 Simulator
Microsoft no longer lists Server 2008 on its main Evaluation Center. However, archival access is available via the (formerly MSDN) or the Windows Server 2008 R2 SP1 Evaluation VHD . For full realism, a hypervisor-based lab (Hyper-V, VMware)