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. > > > > ------------------------------------------------------------------------ > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 8.5.409 / Virus Database: 270.13.112/2394 - Release Date: 09/25/09 05:51:00 > >