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Other WhiteBox Servers
The table below compares basic information about virtual machine packages, including: creator, guest systems supported, license, etc. Note that these are all Virtual Machines in the 'hypervisor' or 'hardware emulator' sense. more...
 Home
Cables, Connectors
Filers, Load Balancers
Home Networking, Cable & DSL
Hubs
KVM Switch Boxes, Cables
Mainframe, DEC, VAX, AS/400
Network Interface Cards,...
Networking, Telecom Tools
Other Networking Equipment
Print Servers, Wired
Racks, Mounts & Patch Panels
Router Components, Memory
Routers, Wired
Security, Firewall, VPN
Server Components, Memory
Servers
 Compaq
Custom, WhiteBox Servers
 Other WhiteBox Servers
Rack Mount
 1U, 1 Unit Height
2U, 2 Unit Height
4U, 4 Unit Height
Other Rack Mount WhiteBox
Tower
Dell
HP
IBM
Other Servers
Sun
Software
Software, Operating Systems
Storage Equipment, NAS, SAN
Switch Components, Memory
Switches
Telephone Systems, Telecom
UPS, Power Protection, APC
Wholesale Lots
Wireless Networking, WiFi
Workstation Components,...
Workstations, Terminals
None of them are VMs in the Application Virtualization sense as the Java Virtual Machine or Parrot virtual machine. For those, see Comparison of Application Virtual Machines.
↑ Providing any virtual environment usually requires some overhead of some type or another. Native usually means that the virtualization technique does not do any CPU level virtualization (like Bochs and QEMU) which require emulating the CPU, so in most circumstances they cannot run at the appliations native speed. Some other products such as VMWare and Virtual PC use similar approches to Bochs and QEMU, however they use a number of advanced techiques to shortcut most of the calls directly to the CPU (similar to the process that JIT compiler uses) to bring the speed to near native in most cases. However, some products such as coLinux, Xen, z/VM (in real mode) do not suffer the cost of cpu level slow downs as the cpu level instructions are not proxied or executing against an emulated architecture since the guest OS or hardware is providing the environment for the applicatons to run under. However access to many of other resources on the system, such as devices and memory may be proxied or emulated in order to broker those shared services out to all the guests, which may cause some slow downs as comparied to running outside of virtualization.;
↑ OS-level virtualisation is described as "native" speed, however some groups have found overhead as high as 3% for some operations, but generally figures come under 1%, so long as secondary effects do not appear.;
↑ See for a paper comparing performance of paravirtualisation approaches (eg Xen) with OS-level virtualisation;
↑ Requires patches/recompiling;
Read more at Wikipedia.org
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