[dba-Tech] FW: Your Blueprint: Optimizing Your Desktop Using VirtualBox

Peter Brawley peter.brawley at earthlink.net
Fri Sep 25 16:55:29 CDT 2009


So to minimise resource usage by the host of VirtualBox, why not use a 
small Linux OS rather than Windows?

PB

-----

Stuart McLachlan wrote:
> VirtualBox , VirtualPC etc are Type 2 Hypervisors
> If you want a Type 1, it is going to cost you.
>
> Straight steal from Wikipedia:
>
> Hypervisors are classified in two types:[1]
>
>     * Type 1 (or native, bare-metal) hypervisors are software systems that run directly on the 
> host's hardware as a hardware control and guest operating system monitor. A guest 
> operating system thus runs on another level above the hypervisor.
>
>     This is the classic implementation of virtual machine architectures; the original hypervisor 
> was CP/CMS, developed at IBM in the 1960s, ancestor of IBM's current z/VM.
>
>     More recent examples are VMware ESX Server, LynxSecure from LynuxWorks, L4 
> microkernels including OKL4 from Open Kernel Labs, Real-Time Systems RTS-Hypervisor, 
> VirtualLogix VLX, TRANGO (now VMware MVP), IBM POWER Hypervisor (PowerVM), IBM 
> System z Hypervisor (PR/SM), Microsoft Hyper-V (released in June 2008), Xen, Citrix 
> XenServer, Oracle VM Server, Parallels Server (released in 2008), ScaleMP vSMP 
> Foundation (released in 2005) , Sun's Logical Domains Hypervisor (released in 2005), Wind 
> River's hypervisor and VxWorks MILS Platform, XtratuM.
> ...
>     * Type 2 (or hosted) hypervisors are software applications running within a conventional 
> operating system environment. Considering the hypervisor layer being a distinct software 
> layer, guest operating systems thus run at the third level above the hardware.
>
>     Examples include VMware Server (formerly known as GSX), VMware Workstation, 
> VMware Fusion, the open source QEMU, Microsoft Virtual PC and Microsoft Virtual Server 
> products, Sun's (formerly InnoTek) VirtualBox, KUKA's [RTOSWin] [1] product family as 
> well as Parallels Workstation and Parallels Desktop and TenAsys' eVM. 
>
>
>   
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