VMware offers a free virtual machine system called “VMware Server”. VMware Server is a referred to as a “hypervisor” or virtual machine monitor (VMM), which is a piece of computer software, firmware or hardware that creates and runs virtual machines. A computer on which a hypervisor is running one or more virtual machines is defined as a “host machine”. Each virtual machine is called a guest machine.
The hypervisor presents the guest operating systems with a virtual operating platform and manages the execution of the guest operating systems. Multiple instances of a variety of operating systems may share the virtualized hardware resources.
A virtual machine (VM) is an emulation of a particular computer system. Virtual machines operate based on the computer architecture and functions of a real or hypothetical computer, and their implementations may involve specialized hardware, software, or a combination of both.
VMware Server allows operating system resources to be multiplexed upon a range of physical server which are domiciled in a data center. Webhosting.net is an expert in providing access to VMware resources to its clients through a wide range of cloud-based services. Along with the server, VMware also offers its users a program called “VMware Player”, which you can use to create and install virtual machines, also known as “guest operating systems”.
While VMware is freeware, it is not open source. This scenario has advantages, as the software is not easily “hackable”. VMware Server also only runs on reliable server versions of Windows and Linux. The system therefore cannot be used to run non-enterprise class operating system environments. Server-class host operating systems include different versions of Microsoft Windows Server 2000, 2003, and 2008, and mainly enterprise-class Linuxes. The product also runs on Windows 7 Enterprise Edition.
VMware Server also uses a Web-based user-interface, entitled “VMware Infrastructure Web Access”, rather than a graphical user interface. For Web interfaces, VMware Server uses the Tomcat 6 Web server. Also, as part of the product, the VMware Host Agent service allows remote access to VMware Server functionality.
VMware is also extremely popular with IT departments due to its back up capacity. VMware Server supports Microsoft’s Shadow Copy service. Virtual machines that support this service can be backed up without stopping.
Shadow Copy, also known as Volume Snapshot Service, Volume Shadow Copy Service or VSS, is a technology included in Microsoft Windows that allows taking manual or automatic backup copies or snapshots of computer files or volumes, even when they are in use. It is implemented as a Windows service called the Volume Shadow Copy service. A software VSS provider service is also included as part of Windows to be used by Windows applications. Shadow Copy technology requires the file system to be NTFS to be able to create and store shadow copies. Shadow copies can be created on local and external (removable or network) volumes by any Windows component that uses this technology, such as when creating a scheduled Windows Backup or automatic system restore point.
The capacity to use Microsoft’s Shadow Copy to back up a virtualized resource is impressive and another reason why VMware can be considered one of the best virtual machine packages available. Another impressive characteristic is that VMware can also competently provide control over physical USB, IDE, and SATA devices.