A SERVICE OF

logo

Xen Architecture – Simple View
Hardware
Hypervisor
Linux
Dom0
Pd
Linux
Dom1
Vd
Netware
Dom2
Vd
Pd = Physical Device Driver
Vd = Virtual Device Driver
Dom0 is the management
domain for Xen guests
controls compute resources
dynamically
(e.g. memory, CPU, I/O)
provides interfaces to the
physical server.
provides administration tools
and interfaces
DomU is the guest OS
hosts the application
workloads
typically uses virtual device
drivers to connect to the
physical drivers in Dom0 by
the hypervisor.
can also use physical device
drivers directly
can be stored in a file-image
Hypervisor
is the virtual interface to the
hardware – virtualizes the
hardware
manages conflicts caused by
OS access to privileged
machine instructions