8
sy
ex
ar
m
M
Pa
V
(o
ru
ten
th
or
sa
so
bu
Software Netw
ystem is exec
xecuted on th
re unaware
modifications.
Microsoft Virt
arallels Serv
Mware Play
open source).
Figure 1
The third
unning severa
nd to speak
he execution
r indeed the
ame applicat
olution perfo
ut the environ
works
cuted above
he host oper
that they ar
. Examples o
tual PC, Mi
ver, Oracle
yer, VMware
.
.5. Virtualizati
figure, see w
type leaves
al machines
of an isolat
of the applic
zones of exe
tion multipl
orms very we
nments are m
the hardware
rating system
re virtualize
of this type
icrosoft Virt
VM Virtual
e Server, VM
ion by emulati
ww.iste.co.uk/
s behind the
simultaneou
or. An isola
cations in an
ecution. Thu
le times in
ell, because
more difficul
e and require
m. The gues
d, so they
of virtualiza
tual Server,
l Box (free)
Mware Work
ion. For a colo
/pujolle/softwa
e previous h
usly as show
tor is a prog
environment
us, the isolato
a multi-in
it does not c
t to isolate.
es an emulat
st operating
do not requ
ation would
Parallels D
), VMware
kstation and
or version of th
are.zip
hypervisor s
wn in Figure
gram which
t, called the
or is able to
nstance mod
cause any ov
tor to be
systems
uire any
include
Desktop,
Fusion,
QEMU
he
systems,
1.6. We
isolated
context,
run the
de. This
verload,
www.it-ebooks.info