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TRANSCRIPT
Lect
ure
(03)
Intr
oduc
tion
To
Virt
ualiz
atio
n, c
ontin
ue
By:
Dr.
Ahm
ed E
lSha
fee
D
r. Ah
med
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in
Com
pute
r Net
wor
ks
١
1. D
efin
ing
A Vi
rtual
izat
ion
Sol
utio
n •
Obv
ious
ly, t
he f
irst
task
at
hand
is
to l
ook
at y
our
curr
ent
infr
astr
uctu
re a
nd c
onsid
er h
ow y
ou m
ight
app
ly v
irtua
lizat
ion
to it
. •
Shou
ld y
ou c
onso
lidat
e a
num
ber
of p
hysic
al s
erve
rs o
nto
a sm
alle
r num
ber o
f mac
hine
s, e
ach
of w
hich
hos
ts a
num
ber o
f vi
rtua
l mac
hine
s?
•Do
you
nee
d to
con
stru
ct a
red
unda
nt in
fras
truc
ture
to a
llow
gu
ests
to
be m
igra
ted
betw
een
mac
hine
s to
ens
ure
high
av
aila
bilit
y?
•O
r do
yo
u ne
ed
to
virt
ualiz
e yo
ur
stor
age
as
wel
l as
co
nsol
idat
e se
rver
s?
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٢
•Ba
sed
on y
our
asse
ssm
ent
of t
he s
ituat
ion,
you
will
iden
tify
wha
t po
rtio
n of
the
exi
stin
g in
fras
truc
ture
is
suita
ble
for
virt
ualiz
atio
n.
•O
nce
this
is as
sess
men
t is
com
plet
ed, t
hen
you
can
iden
tify
the
corr
ect v
irtua
lizat
ion
solu
tion
to im
plem
ent.
•O
nce
this
asse
ssm
ent
is co
mpl
eted
, yo
u ha
ve t
heba
sis f
or
perf
orm
ing
a co
mpa
rison
bet
wee
n th
e pr
e-vi
rtua
lizat
ion
and
post
-virt
ualiz
atio
n co
nfig
urat
ion.
•
Whe
n th
is co
mpa
rison
is d
one,
you
can
cal
cula
te th
e fin
anci
al
impa
ct o
f go
ing
to v
irtua
lizat
ion
as w
ell
as t
he o
pera
tiona
l be
nefit
s yo
u sh
ould
der
ive
from
the
proj
ect.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٣
2. E
stab
lishi
ng C
urre
nt C
ost
Stru
ctur
e •
Ther
e ar
e tw
o br
oad
cate
gorie
s of
cos
t: ha
rd c
osts
and
sof
t co
sts.
•
Har
d co
sts
are
any
cost
s th
at r
equi
re p
ayin
gac
tual
mon
ey t
o an
ent
ity.
Har
d co
sts
are
ofte
n as
soci
ated
with
a s
peci
fic
prod
uct a
nd s
ervi
ce.
For e
xam
ple,
if y
our o
rgan
izatio
n ut
ilize
s an
out
side
com
pany
to ru
n se
curit
y sc
ans
on y
our s
erve
rs, t
he
fees
you
pay
to th
at c
ompa
ny a
re a
har
d co
st.
•So
ft c
osts
are
typ
ical
ly a
ssoc
iate
d w
ith in
tern
al p
erso
nnel
or
inte
rnal
ser
vice
s fo
r w
hich
no
expl
icit
char
geba
ck s
yste
m is
in
plac
e.So
ft c
osts
are
wha
t th
e or
gani
zatio
n sp
ends
on
an
ongo
ing
basis
doi
ng it
s dai
ly w
ork.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٤
1. H
ard
cost
s fir
st
•A
give
n or
gani
zatio
n m
ight
hav
e m
any
diffe
rent
typ
es o
f har
d co
sts.
Typ
ical
ly th
ese
are
easie
r to
iden
tify
and
trac
k th
an s
oft
cost
s.
•H
owev
er, t
here
are
thr
ee h
ard
cost
s th
at m
ust
be in
clud
ed in
ou
r ana
lysis
:
1.Po
wer
2.
Serv
er m
aint
enan
ce
3.O
utsi
de s
ervi
ces
•W
e’ll
look
at e
ach
of th
ese
thre
e ar
eas m
ore
clos
ely.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٥
1.1
Pow
er
•Ex
cept
for
the
rare
orga
niza
tion
that
cre
ates
som
e or
all
of it
s ow
n po
wer
, thi
s aha
rd c
ost.
•Ea
ch m
achi
ne i
n yo
ur c
urre
nt i
nfra
stru
ctur
e sh
ould
hav
e do
cum
enta
tion
of h
ow m
uch
pow
er it
dra
ws.
•
Use
the
pow
er d
raw
lev
el a
ssoc
iate
d w
ith t
hem
ost
typi
cal
load
fact
or fo
r the
mac
hine
.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٦
•If
you
are
repl
acin
g ol
d m
achi
nes
with
new
er m
achi
nes,
the
y w
ill p
roba
bly
be m
ore
effic
ient
in
thei
r po
wer
con
sum
ptio
n an
d th
ereb
y sa
ve so
me
on p
ower
cos
ts.
•Si
nce
the
virt
ualiz
atio
n pr
ojec
t w
ill
also
, m
ost
likel
y,be
re
duci
ng t
he n
umbe
r of
phy
sical
mac
hine
s, a
noth
er p
ower
co
st sa
ving
s is r
ealiz
ed.
•A
com
mon
ratio
in th
e vi
rtua
lizat
ion
wor
ld is
5:1
.
•Th
is m
eans
tha
t yo
u ta
ke fi
ve o
ld s
erve
rs a
nd t
urn
them
into
vi
rtua
l mac
hine
s run
ning
on
one
new
phy
sical
serv
er.
•Yo
ur p
ower
sav
ings
wou
ld b
e am
ount
of p
ower
to ru
n fo
ur o
ld
serv
ers
plus
the
diffe
renc
e be
twee
n th
e po
wer
dra
w o
f an
old
serv
eran
d th
e po
wer
dra
w o
f the
new
serv
er.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٧
1.2
Serv
er M
aint
enan
ce
•Th
e cu
rren
t m
achi
nes
in y
our
data
cen
ter
are
mos
t lik
ely
unde
r a se
rvic
e pl
an.
•Se
rvic
e pl
ans
com
e in
m
any
diffe
rent
form
s;
user
s ca
n ty
pica
lly c
hoos
e on
e of
seve
ral
diffe
rent
lev
els
of r
espo
nse
time
guar
ante
e.
•Fo
r ex
ampl
e, r
epor
ted
prob
lem
mig
ht b
e co
nsid
ered
in
2 ho
urs,
4 h
ours
, and
so o
n.
•As
you
wou
ld e
xpec
t, fa
ster
resp
onse
tim
es c
ost m
ore
mon
ey.
•O
rgan
izatio
ns o
ften
var
y th
e le
vel o
f ser
vice
pla
n ac
cord
ing
to
the
impo
rtan
ce o
f the
mac
hine
.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٨
•Its
not
ver
y co
st e
ffect
ive
to p
urch
ase
a fa
st re
spon
siven
ess
for a
mac
hine
use
d to
gen
erat
e lo
w-p
riorit
y re
port
s.
•O
n th
e ot
her h
and,
if th
ose
repo
rts a
re u
sed
to sc
hedu
le th
e or
gani
zatio
n’s w
ork
forc
e, k
eepi
ng th
e m
achi
ne u
p m
ight
be
vita
l. •
Serv
er m
aint
enan
ce c
osts
sho
uld
be a
fairl
y ea
sy h
ard
cost
to
esta
blish
be
caus
e th
e co
sts
are
dire
ctly
as
soci
ated
w
ith
indi
vidu
al m
achi
nes.
•
It m
ight
be
the
case
tha
t th
e or
gani
zatio
n ha
s a
blan
ket
plan
th
at c
over
s a
larg
e nu
mbe
r of m
achi
nes,
but
it s
houl
d st
ill b
e a
fairl
y ea
sy t
ask
to id
entif
y ho
w m
uch
mai
nten
ance
cos
ts p
er
mac
hine
, and
you
’ll n
eed
to u
se t
hose
num
bers
as
the
inpu
t to
you
r ass
essm
ent o
f bas
elin
e co
sts.
Dr
. Ahm
ed E
lSha
fee,
ACU
: Fa
ll 20
14, S
elec
ted
Topi
cs in
Com
pute
r Net
wor
ks
٩
1.3
Out
side
Ser
vice
s •
It m
ight
be
th
at
the
orga
niza
tion
enga
ges
an
outs
ide
orga
niza
tion
to p
erfo
rm se
rvic
es w
ithin
you
r dat
a ce
nter
. •
In t
he c
urre
ntw
orld
whe
re “
outs
ourc
ing”
is
so p
opul
ar,
it’s
ofte
n m
ore
cost
effe
ctiv
e, o
r ju
st s
impl
er, t
o us
e an
out
side
vend
or
to
perf
orm
w
ork
rath
er
than
re
ly
on
inte
rnal
pe
rson
nel.
•If
your
or
gani
zatio
n us
es
outs
ide
vend
ors
for
anyt
hing
as
soci
ated
with
kee
ping
its
infr
astr
uctu
re u
p an
d ru
nnin
g (fo
r ex
ampl
e, s
omeo
ne t
o ru
n ba
ckup
s on
you
rm
achi
nes)
, yo
u ha
ve o
utsid
e se
rvic
es h
ard
cost
s th
at m
ust b
e as
signe
d to
the
base
line
cost
stru
ctur
e.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
١٠
2. s
oft c
ost a
naly
sis
•Th
ings
get
a bi
t mor
e tr
icky
with
soft
cos
ts.
•
Som
esy
stem
adm
inist
rato
rs w
ill t
ell y
ou t
ryin
g to
ass
ign
soft
co
sts t
o a
spec
ific
serv
er is
ver
y ha
rd.
•H
owev
er,
with
som
e di
ligen
t w
ork,
you
can
est
ablis
hqu
ite
clos
ely
how
muc
h yo
ur o
rgan
izat
ion
spen
ds o
n so
ft c
ost i
tem
s fo
r the
mac
hine
s in
ques
tion.
•
Soft
cos
ts c
ome
in v
ario
us f
orm
s, s
o le
t’s f
ocus
on
two
prim
ary
soft
cos
ts:
1.
Mac
hine
adm
inis
trat
ion
2.Ba
ckup
s Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
١١
2.1
Mac
hine
Adm
inis
trat
ion
•M
achi
nead
min
istra
tion
refe
rs t
o th
e w
ork
done
by
inte
rnal
pe
rson
nel
keep
ing
the
tech
nolo
gy
infr
astr
uctu
re
life
and
func
tioni
ng
•Th
is te
rm t
ypic
ally
inc
lude
s sy
stem
adm
inist
rato
rs,
netw
ork
adm
inist
rato
rs, a
nd d
atab
ase
adm
inist
rato
rs.
•H
owev
er,
your
ana
lysis
sho
uld
focu
s on
thos
epe
rson
nel
dire
ctly
invo
lved
with
the
mac
hine
s in
que
stio
n an
d di
scou
nt
the
pers
onne
l w
hose
wor
k w
ill b
e un
affe
cted
whe
ther
the
m
achi
nes a
reph
ysic
al o
r virt
ual.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
١٢
2.2
Back
up
•Ba
ckup
ref
ers
to c
reat
ing
a se
cure
cop
y of
the
dat
a on
in
divi
dual
mac
hine
s.
•Th
is ca
n be
han
dled
in a
wid
e va
riety
of m
etho
ds.
•
The
data
mig
ht b
e co
pied
to a
tape
or
by r
eplic
atin
g th
e da
ta
acro
ss th
e ne
twor
k to
ano
ther
ser
ver,
or e
ven
by s
endi
ng th
e da
ta
outs
ide
the
orga
niza
tion
(a
so-c
alle
d “o
utsid
e th
e fir
ewal
l” b
acku
p) to
a re
mot
e ba
ckup
serv
ice.
•
No
mat
ter
wha
t m
etho
d is
used
to
back
up e
xist
ing
data
, so
meo
ne p
roba
bly
spen
ds s
ome
time
mak
ing
sure
it ha
ppen
s.
It is
the
cost
s ass
ocia
ted
with
this
time
that
you
nee
d to
trac
k.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
١٣
•Al
thou
gh a
num
ber
of v
endo
rs o
ffer
soft
war
e de
signe
d to
au
tom
ate
the
back
up p
roce
ss, m
any
orga
niza
tions
stil
l rel
y on
m
anua
l wor
k by
em
ploy
ees.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
١٤
3. I
dent
ifyin
g Vi
rtual
izat
ion
Cos
ts
•O
nce
you’
ve e
stab
lishe
d th
e cu
rren
t co
st s
truc
ture
for
you
r as
-is
infr
astr
uctu
re,
you
need
to
id
entif
y th
e po
tent
ial
bene
fits
and
cost
s of m
ovin
g to
virt
ualiz
atio
n.
•Th
is pa
rt o
f the
ana
lysis
is in
gen
eral
mor
e di
fficu
lt an
d tr
icky
th
at
dete
rmin
ing
the
curr
ent
cost
st
ruct
ure
beca
use
it re
quire
s es
timat
ion
rath
er th
an d
ocum
enta
tion.
•
Nev
erth
eles
s, t
o un
ders
tand
the
com
plet
e im
plic
atio
ns o
f m
ovin
g to
virt
ualiz
atio
n, y
ou n
eed
to k
now
the
fin
anci
al
impa
ct o
f the
virt
ualiz
atio
n sc
enar
io y
ou in
tend
to im
plem
ent
•N
ote
that
you
can
’t d
espi
te a
ll of
the
bene
fits
of v
irtua
lizat
ion
for
free
. •
The
orga
niza
tion
will
incu
r a
rang
e of
cos
ts a
s yo
u m
ove
to
virt
ualiz
atio
n, a
nd i
t is
impo
rtan
t to
rec
ogni
ze t
hem
and
es
timat
eth
em in
you
r ove
rall
cost
/ben
efit
anal
ysis.
Dr
. Ahm
ed E
lSha
fee,
ACU
: Fa
ll 20
14, S
elec
ted
Topi
cs in
Com
pute
r Net
wor
ks
١٥
•W
e’ll
focu
s on
five
prim
ary
area
s of t
he v
irtua
lizat
ion
proj
ect’s
po
tent
ial c
osts
: 1.
Sele
ctio
n of
a v
irtua
lizat
ion
depl
oym
ent s
cena
rio.
2.Id
entif
ying
the
new
har
dwar
e re
quire
men
ts.
3.Co
nsid
erat
ion
of o
ther
phy
sical
equ
ipm
ent.
4.Pu
rcha
sing
new
soft
war
e.
5.Tr
aini
ng e
mpl
oyee
s.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
١٦
Step
1:
Dep
loym
ent S
cena
rio
•Th
e fir
st s
tep
in e
stim
atin
g yo
ur c
osts
aft
er v
irtua
lizat
ion
by
sele
ctin
g th
e co
nfig
urat
ion
you’
ll in
stal
l. •
Ther
e ar
e m
any
diffe
rent
virt
ualiz
atio
n pr
oduc
ts a
nd m
any
diffe
rent
pot
entia
l con
figur
atio
ns.
•
For
exam
ple,
will
you
hav
e in
divi
dual
virt
ualiz
ed s
erve
rs, o
r a
virt
ualiz
ed
pool
of
se
rver
, po
ssib
ly
incl
udin
g vi
rtua
lized
st
orag
e as
wel
l.
•Th
e de
cisio
n is
not a
lway
s eas
y.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
١٧
Step
1: N
ew H
ardw
are
• A
lthou
gh v
irtua
lizat
ion
is a
very
fle
xibl
e te
chno
logy
and
is ca
pabl
e of
run
ning
on
a ve
ry w
ide
rang
e of
har
dwar
e,yo
u m
ight
al
so
wan
t to
em
ploy
th
e la
test
ge
nera
tion
of
virt
ualiz
atio
n-or
ient
ed
hard
war
e to
ho
st
you
virt
ualiz
ed
serv
ers.
•So
me
cons
ider
atio
ns s
uch
as u
se o
f Xen
for
para
virt
ualiz
atio
n (r
ecal
l fr
om t
he I
ntro
duct
ion
to V
irtua
lizat
ion
that
thi
s is
light
wei
ght
virt
ualiz
atio
n th
at m
ost
likel
y re
quire
s gu
est
OS
mod
ifica
tion
to
achi
eve
high
pe
rfor
man
ce)
will
re
quire
ha
rdw
are
with
the
virt
ualiz
atio
n-en
able
d ch
ips
from
Int
el o
r AM
D.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
١٨
• If
you
’re g
oing
to im
plem
ent a
pro
duct
suc
h as
VM
war
e, th
at
runs
onl
y on
cer
tain
typ
es o
f ha
rdw
are,
a h
ardw
are
upgr
ade
will
aga
in, p
roba
bly
be in
ord
er.
•So
met
imes
in t
his
sort
of
envi
ronm
ent,
it is
usef
ul t
ocr
eate
tw
o (o
r m
ore)
ver
sions
of t
he c
ost/
bene
fit a
naly
sis: o
ne w
ith
new
har
dwar
e (v
ario
us le
vels
and
hard
war
e) a
nd o
ne w
ithou
t (a
ssum
ing
all
exist
ing
hard
war
e w
ill
be
usab
le
in
the
virt
ualiz
ed e
nviro
nmen
t).
•N
ote,
that
new
er h
ardw
are
is ge
nera
lly m
ore
ener
gy e
ffici
ent,
so s
ome
cost
sav
ings
will
be
gain
ed f
rom
the
new
har
dwar
e th
at w
ill h
elp
to o
ffset
its c
ost.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
١٩
•Yo
u’ll
need
to e
stim
ate
how
man
y se
rver
s yo
u w
ill re
quire
. –
For
exam
ple,
if y
ou’re
pla
nnin
g to
mig
rate
20
curr
ent
phys
ical
ser
vers
an
d do
n’t
wan
t to
run
mor
e th
an 7
gue
sts
on e
ach
phys
ical
ser
ver,
you’
ll ne
ed th
ree
phys
ical
ser
vers
. •
Har
dwar
e is
a ha
rd c
ost,
so t
he c
ost
of t
he p
hysic
al s
erve
rs
goes
into
the
hard
cos
ts se
ctio
n of
the
cost
/ben
efit
anal
ysis.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٢٠
Step
3: O
ther
Phy
sica
l Equ
ipm
ent
•De
pend
ing
on th
e pr
opos
ed c
onfig
urat
ion
you’
ve d
esig
ned
for
the
virt
ualiz
ed in
fras
truc
ture
, you
mig
ht a
lso d
ecid
e to
incl
ude
othe
r ph
ysic
al e
quip
men
t to
han
dle
virt
ualiz
ed s
tora
ge, s
uch
as a
Net
wor
k-At
tach
ed S
tora
ge
(NAS
) or
aSt
orag
e Ar
ea
Net
wor
k (S
AN).
•
Any
addi
tiona
l ph
ysic
al e
quip
men
t is,
nat
ural
ly a
har
d co
st
and
shou
ld b
e in
clud
ed i
n th
at a
rea
of t
he c
ost/
bene
fit
anal
ysis.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٢١
Step
4: N
ew S
oftw
are
•By
the
tim
e yo
u’ve
rea
ched
thi
s po
int
in t
he v
irtua
lizat
ion
proj
ect,
you
shou
ld h
ave
a pr
etty
goo
d id
ea h
ow m
any
of y
our
curr
ent s
erve
rs y
ou’ll
be
mig
ratin
g to
virt
ual m
achi
nes.
•De
pend
ing
on t
he lo
ad t
hey
plac
e on
the
und
erly
ing
phys
ical
ha
rdw
are,
yo
u’ll
be
able
to
es
timat
e ho
w
man
y vi
rtua
l m
achi
nes y
ou c
an su
ppor
t per
phy
sical
mac
hine
. •
In t
urn,
tha
t es
timat
e w
ill t
ell
you
how
man
y vi
rtua
lizat
ion
soft
war
e lic
ense
s yo
u’ll
requ
ire fo
r th
e pr
ojec
t. T
his
too,
is a
ha
rd c
ost.
•Ev
en,
if yo
u se
lect
to
use
one
of t
he f
ree
or o
pen
sour
ce
prod
ucts
and
thu
s in
cur
no l
icen
ses
cost
s, y
ou m
ay s
till
purc
hase
sof
twar
e m
aint
enan
ce,
ther
eby
incu
rrin
g on
goin
g ha
rd c
osts
. Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٢٢
Step
5: T
rain
ing
Empl
oyee
s •
A le
arni
ng c
urve
isas
soci
ated
with
beg
inni
ng t
o us
ean
y ne
w
soft
war
e pr
oduc
t. •
Man
y or
gani
zatio
ns e
duca
te th
eir e
mpl
oyee
s th
roug
h tr
aini
ng
clas
ses
to g
et t
hem
up
to s
peed
on
the
new
sof
twar
e m
ore
quic
kly.
•
If yo
ur o
rgan
izatio
n is
likel
y to
tak
e ad
vant
age
of t
his
type
of
trai
ning
, th
e co
st o
f th
e tr
aini
ng s
houl
d be
inc
lude
d in
the
ha
rd c
osts
of t
he p
ropo
sed
virt
ualiz
atio
n pr
ojec
t.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٢٣
4. I
dent
ifyin
g Th
e Vi
rtual
izat
ion
Pro
ject
Ben
efits
•
Afte
r you
hav
e de
fined
the
conf
igur
atio
n of
you
r virt
ualiz
atio
n so
lutio
n an
d id
entif
y th
e co
sts
asso
ciat
ed w
ith i
t, yo
u ca
n es
timat
e th
e fin
anci
al
bene
fits
that
w
illbe
gain
ed
by
impl
emen
ting
the
virt
ualiz
atio
n pr
ojec
t. •
Beca
use
virt
ualiz
atio
n en
able
s m
ultip
le s
yste
ms
to r
un o
n a
singl
e pi
ece
of h
ardw
are,
mos
t or
gani
zatio
ns f
ind
that
the
y ca
n re
duce
thei
r cur
rent
cos
t str
uctu
re b
y us
ing
virt
ualiz
atio
n.
•Th
ere
are
two
prim
ary
type
s of
fin
anci
al b
enef
its t
hat
a pr
oper
ly i
mpl
emen
ted
virt
ualiz
atio
n pr
ojec
t ca
n pr
ovid
e an
or
gani
zatio
n:
1.Co
st s
avin
gs a
chie
ved
by n
ot h
avin
g to
spe
nd m
oney
that
is c
urre
ntly
be
ing
spen
t on
exist
ing
infr
astr
uctu
re c
ompo
nent
s.
2.Co
st
savi
ngs
achi
eved
th
roug
h m
ore
effe
ctiv
e an
d ef
ficie
nt
oper
atio
ns.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٢٤
4.1
Har
d C
ost R
educ
tions
•
As y
ou m
igra
te o
pera
ting
syst
ems
and
appl
icat
ions
fro
m
phys
ical
to
virt
ual s
erve
rs,
you
have
the
opp
ortu
nity
to
run
few
er p
hysic
al m
achi
nes.
•
For
ever
y m
achi
ne
you
retir
e,
you
save
on
ha
rdw
are
mai
nten
ance
and
pow
er c
osts
. (1
) red
uced
har
dwar
e m
aint
enan
ce,
(2
) red
uced
soft
war
e lic
ense
s, a
nd
(3) r
educ
ed p
ower
cos
ts.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٢٥
4.1.
1 Re
duce
d H
ardw
are
Mai
nten
ance
•
Even
mod
est
virt
ualiz
atio
n se
rver
s ca
n su
ppor
t fo
ur o
r m
ore
simul
tane
ous
virt
ualiz
ed s
erve
rs,y
ou m
ight
be
able
to re
tire
a nu
mbe
r of m
achi
nes f
rom
you
r pre
sent
infr
astr
uctu
re.
•Pa
rt o
f cal
cula
ting
the
curr
ent c
osts
is id
entif
ying
the
ongo
ing
mai
nten
ance
cos
ts fo
r eve
ry m
achi
ne; f
or e
very
mac
hine
that
ca
n be
retir
ed, y
ou c
an id
entif
y th
e m
aint
enan
ce fe
esth
at w
ill
no lo
nger
be
nece
ssar
y an
d ad
d th
em to
the
cost
savi
ngs.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٢٦
4.1.
2 Re
duce
d So
ftw
are
Lice
nses
•
By m
ovin
g to
a v
irtua
lized
envi
ronm
ent,
you
may
be
able
to
real
ize
a sa
ving
s on
the
soft
war
e lic
ense
s .
•If
your
ana
lysis
indi
cate
s th
at th
is w
ill b
e po
ssib
le, y
ou s
houl
d in
clud
e th
ese
savi
ngs
in th
e po
tent
ial b
enef
its th
e pr
ojec
t will
pr
ovid
e.
•Be
car
eful
with
thi
s an
alys
is ho
wev
er a
s m
any
soft
war
e ve
ndor
s ar
est
ill
grap
plin
g w
ith
the
impl
icat
ions
of
vi
rtua
lizat
ion,
so
in t
he e
nd y
ou m
ight
not
be
able
to
show
an
y sa
ving
s at a
ll, a
nd in
fact
may
eve
n pa
y m
ore!
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٢٧
•Fo
r exa
mpl
e, if
you
mig
rate
to m
ore
pow
erfu
l sys
tem
s, e
ven
if yo
u ar
en’t
curr
ently
usin
g al
l of t
he p
roce
ssin
g po
wer
for
the
mig
rate
d sy
stem
, you
may
pay
mor
e fo
r you
r sof
twar
e.
•Th
e re
ason
for
thi
s is
that
som
e so
ftw
are
man
ufac
ture
rs
char
ge b
y ho
w m
any
proc
esso
rs th
e un
derly
ing
hard
war
e ha
s;
if yo
u’re
ru
nnin
g yo
ur
virt
ualiz
ed
serv
er
on
a fo
ur-w
ay
mac
hine
but
usin
g on
ly o
ne p
roce
ssor
’s p
ower
, w
ith t
hese
so
ftw
are
vend
ors
you
may
be
char
ged
a lic
ense
fee
for a
four
-pr
oces
sor b
ox.
•Do
n’t
be s
urpr
ised
if yo
ur s
oftw
are
licen
se a
nd s
oftw
are
mai
nten
ance
co
sts
don’
t sh
ow
any
savi
ngs
due
to
virt
ualiz
atio
n.
Dr
. Ahm
ed E
lSha
fee,
ACU
: Fa
ll 20
14, S
elec
ted
Topi
cs in
Com
pute
r Net
wor
ks
٢٨
4.1.
3 Re
duce
d Po
wer
Cos
ts
•W
hen
it co
mes
to
iden
tifyi
ng t
he p
oten
tial p
ower
sav
ing,
the
pr
oces
s is s
trai
ghtf
orw
ard.
•
The
docu
men
tatio
n sh
ould
pr
ovid
e se
vera
l po
wer
m
easu
rem
ents
ass
ocia
ted
with
var
ious
load
s.
•U
se t
he p
ower
dra
w l
evel
ass
ocia
ted
with
the
mos
t ty
pica
l lo
ad fa
ctor
for t
he m
achi
nes i
n yo
ur in
fras
truc
ture
. •
The
next
cou
ple
of p
ages
illu
stra
tes t
his f
or a
Sun
Ser
ver X
2-8.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٢٩
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٣٠
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٣١
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٣٢
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٣٣
For t
he p
revi
ous
conf
igur
atio
n, th
e es
timat
ed p
ower
con
sum
ptio
n fo
r the
se
rver
is s
how
n af
ter y
ou c
lick
the
Cal
cula
te b
utto
n.
•If
you’
ve p
laye
d ar
ound
a b
it w
ith th
e po
wer
cal
cula
tor f
or th
e Su
n Se
rver
X2-
8 se
rver
as
dem
onst
rate
d on
the
pre
viou
s fe
w
page
s, y
ou p
roba
bly
notic
ed a
fairl
y bi
g di
ffere
nce
in t
he id
le
pow
er a
nd th
e ty
pica
l pow
er w
hen
the
serv
er is
load
ed.
•Th
is m
eans
tha
t to
get
an
accu
rate
est
imat
e of
the
pow
er
your
exi
stin
g ph
ysic
al m
achi
nes
cons
ume,
you
nee
d a
fairl
y ac
cura
te p
ictu
re o
f th
eir
aver
age
load
ing.
(N
otic
e th
at e
ven
an id
le se
rver
stil
l dra
ws a
sign
ifica
nt a
mou
nt o
f pow
er.)
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٣٤
•In
the
end
, po
wer
cos
ts c
an b
e re
duce
d in
tw
o sig
nific
ant
way
s:
•(1
) by
retir
ing
som
e ph
ysic
al m
achi
nes a
nd
•(2
) re
plac
ing
olde
r le
ss e
ffici
ent
mac
hine
s w
ith n
ewer
mor
e ef
ficie
nt m
achi
nes t
o se
rve
as th
e vi
rtua
lizat
ion
plat
form
s.
•If
you
use
the
5:1
ratio
(old
sys
tem
was
20
serv
ers)
, the
tot
al
pow
er s
avin
gs a
re t
he a
mou
nt o
f pow
er r
equi
red
to r
un fo
ur
old
serv
ers
plus
the
diff
eren
ce b
etw
een
the
pow
er d
raw
of a
sin
gle
old
serv
er a
nd th
e po
wer
dra
w o
f the
new
serv
er.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٣٥
•Re
duce
d Po
wer
Cos
ts –
Exa
mpl
e Sc
enar
io
•Su
ppos
e yo
u cu
rren
tly h
ave
15 s
erve
rs o
pera
ting
in y
our
infr
astr
uctu
re.
•
You
deci
de t
o m
igra
te a
ll of
the
m t
o ne
w v
irtua
lizat
ion
serv
ers.
U
sing
the
5:1
ratio
, yo
u co
nclu
de y
ou w
ill n
eed
3 ne
w se
rver
s to
repl
ace
the
15 o
ld se
rver
s.
•Yo
u’ll
com
plet
ely
retir
e 12
mac
hine
s, s
o yo
u ca
n ad
d th
e po
wer
con
sum
ptio
n of
eac
h of
tho
se m
achi
nes
to t
he p
ower
sa
ving
s.
•In
add
ition
, yo
u’ll
repl
ace
3 of
the
old
mac
hine
s, w
ith n
ew,
low
er-p
ower
-dra
w m
achi
nes.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٣٦
•Th
e po
wer
you
sav
e fo
r th
ese
thre
e m
achi
nes
will
be
thre
e tim
es th
e di
ffere
nce
betw
een
the
pow
er r
equi
rem
ents
of t
he
old
mac
hine
s ve
rsus
the
new
mac
hine
s, s
o yo
u ca
n ad
d th
is nu
mbe
r to
the
tota
l pow
er sa
ving
s.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٣٧
4.2
Soft
Cos
t Red
uctio
ns
4.2.
1 Sy
stem
Adm
inis
trat
ion
Wor
k Is
Red
uced
•
Keep
ing
a ph
ysic
al se
rver
up
and
runn
ing
take
s a lo
t of w
ork.
•
It ne
eds
to
be
mon
itore
d,
have
its
ha
rdw
are
upgr
aded
oc
casio
nally
, and
hav
e ba
ckup
s run
. •
In g
ener
al, t
he e
ffort
nee
ded
to k
eep
a vi
rtua
lized
ser
ver
up
and
runn
ing
is re
duce
dw
hen
com
pare
d w
itha
phys
ical
se
rver
. So
me
estim
ates
sho
w a
red
uctio
n of
effo
rt in
the
30-
50%
rang
e.
•Th
is is
due
prim
arily
to
the
fact
tha
t ha
rdw
are
issue
s ar
e re
duce
d as
you
onl
y ha
ve th
e ho
st h
ardw
are
to d
eal w
ith.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٣٨
•O
f co
urse
, th
e ab
ility
to
mig
rate
the
virt
ualiz
ed s
erve
rs
requ
ires
addi
tiona
l ha
rdw
are
orex
istin
g ha
rdw
are
that
can
ha
ndle
the
add
ition
al l
oad,
so
you
don’
t ty
pica
lly w
ant
to
have
all
your
phy
sical
hos
ts r
unni
ng a
t ca
paci
ty (
nor
your
vi
rtua
l ser
vers
eith
er fo
r tha
t mat
ter)
.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٣٩
5. C
reat
ing
The
Spr
eads
heet
•Th
e cu
lmin
atio
n of
you
r w
ork
in t
he f
irst
four
par
ts o
f th
e pr
ojec
t an
alys
is ta
kes
the
shap
e of
a d
etai
led
spre
adsh
eet
that
will
cle
arly
illu
stra
te t
he c
osts
and
ben
efits
of
your
pr
opos
ed p
roje
ct.
•W
e’ll
look
at
the
deta
ils o
f th
is fin
al s
tep
of t
he c
ost/
bene
fit
anal
ysis
in th
e fo
llow
ing
slide
s.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٤٠
•Yo
u sh
ould
incl
ude
th
e fo
llow
ing
aspe
cts
on
thre
e sp
read
shee
ts:
1.Cu
rren
t Cos
t Str
uctu
re s
prea
dshe
et
2.Vi
rtua
lized
Cos
t Str
uctu
re s
prea
dshe
et
3.A
sum
mar
y pr
ojec
t cos
t spr
eads
heet
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٤١
Exam
ple
1
٤٢ •A
com
pany
cur
rent
ly h
as a
n in
fras
truc
ture
of 2
0 ph
ysic
al s
erve
rs.
•
Serv
er c
onsu
mes
pow
er o
f 10
00$/
year
and
mai
nten
ance
con
trac
t w
ith
vend
or o
f 300
$/ye
ar
•IT
dep
t st
uff s
pend
s 1
hour
s/w
eek
for
serv
er a
dmin
istra
tion
task
s an
d 15
m
in/d
ay fo
r bac
kup
task
s.
•A
proj
ect
of v
irtua
lizat
ion
at r
atio
of
1:7
is p
ropo
sed,
the
pric
e of
new
se
rver
s ar
e 21
k$ e
ach.
•
New
ser
ver
cons
umed
pow
er i
n av
erag
e is
600
$/ye
ar.
mai
nten
ance
co
ntra
ct w
ith v
endo
r of 3
00$/
year
•
Vmw
are
licen
se is
400
0$/s
erve
r, fr
ee m
aint
enan
ce fo
r fir
st y
ear
then
20%
of
lice
nse
pric
e fo
r eac
h ye
ar a
fter
. •
Empl
oyee
tra
inin
g co
sts
1500
$, a
nd y
ou w
ill t
rain
2 e
mpl
oyee
s in
the
firs
t ye
ar, t
hen
empl
oyee
for n
ext 4
yea
rs
•as
sum
e th
at t
here
will
be
a 2%
incr
ease
in t
he c
ost
to p
ower
eac
h se
rver
in
yea
r 3
as w
ell a
s a
3% in
crea
se in
the
ser
ver
mai
nten
ance
con
trac
t in
ye
ar 4
. •
Assu
me
sys a
dmin
mon
thly
sala
ry =
500
0$/m
onth
•
Build
a c
ost s
umm
ary
spea
red
shee
t to
calc
ulat
e th
ere
duce
d ex
pens
es
Curr
ent s
ituat
ion
1.H
ard
cost
s:
po
wer
= 1
000$
/yea
r/se
rver
mai
nten
ance
= 3
00$/
year
/ser
ver
2. S
oft c
osts
:
adm
inist
ratio
n =
1h/w
eek/
serv
er
= 1
* 5
2 =
52 h
/ser
ver/
year
assu
me
that
wor
king
hou
rs =
8 h
/day
ad
min
istra
tion
= 5
2/8
= 7
days
/ser
ver/
year
as s
ysad
min
sala
ry =
500
0$/m
onth
= 5
000/
24 =
210
$/d
ay
adm
inist
ratio
n =
7 *
210=
147
0 $/
year
≡ 1
500
$ / y
ear
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٤٣
b
acku
p =
15 m
in/d
ay/s
erve
r
=
.25*
5*52
= 6
5 ho
urs/
serv
er/y
ear =
65/
8 =
=
9 d
ays/
year
/ser
ver
= 9*
210
= 1
890$
= 1
900$
serv
er/y
ear
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٤٤
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٤٥
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٤٦
Virt
ualiz
atio
n •
Num
ber o
f mac
hine
s = 2
0/7
= 3
•H
ard
cost
mac
hine
s pur
chas
e =
2100
0*3
m
achi
nes m
aint
enan
ce =
300
* 3
(3%
incr
ease
4th
yea
r)
so
ftw
are
= 4
000*
3
soft
war
e m
aint
enan
ce =
0.2
*400
0*3
(exc
ept 1
st y
ear)
po
wer
= 6
00*3
(2%
incr
ease
3rd
year
)•
Soft
cos
t (sa
me
as c
urre
nt si
tuat
ion)
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٤٧
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٤٨
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٤٩
Pro
ject
Cos
t Sum
mar
y S
prea
dshe
et
•Th
e fin
al st
ep in
our
virt
ualiz
atio
n pr
ojec
t cos
t/be
nefit
ana
lysis
is
to c
reat
e a
sum
mar
y sp
read
shee
t th
at w
ill,
hope
fully
, ill
ustr
ate
the
cost
be
nefit
of
th
e pr
opos
ed
virt
ualiz
atio
n pr
ojec
t. •
This
par
t is
prob
ably
the
sim
ples
t ste
p, in
that
we
only
nee
d to
ga
ther
the
sum
mar
y nu
mbe
rs fr
om th
e cu
rren
t cos
t str
uctu
re
and
the
virt
ualiz
ed c
ost s
truc
ture
spre
adsh
eets
. •
For e
ase
of re
fere
nce,
I in
clud
ed th
e to
tal y
early
and
five
yea
r lif
etim
e ha
rd a
nd s
oft
cost
s fo
r bo
th t
he c
urre
nt a
nd t
he
prop
osed
pro
ject
in th
e su
mm
ary
shee
t. •
The
mai
n nu
mbe
rs o
f con
cern
in th
e su
mm
ary
are
the
net f
ive
year
har
d, s
oft a
nd o
vera
ll co
st s
avin
gs p
redi
cted
to b
e ga
ined
th
roug
h im
plem
enta
tion
of th
e pr
opos
ed p
roje
ct.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٥٠
•Th
e ne
xt p
age
illus
trat
es t
he s
umm
ary
spre
adsh
eet
for
our
hypo
thet
ical
org
aniza
tion
and
virt
ualiz
atio
n pr
ojec
t. •
Not
ice,
as
w
e ha
d ho
ped,
th
e pr
opos
ed
proj
ect
shou
ld
prov
ide
a sig
nific
ant r
etur
n to
the
com
pany
ove
r its
pro
ject
ed
five
year
life
tim
e.
•Th
e ne
t ove
rall
cost
sav
ings
bas
ed o
n ou
r sce
nario
is ju
st o
ver
dolla
rs 1
,300
,000
$, o
r abo
ut p
er 2
60,0
00$y
ear.
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٥١
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٥٢
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٥٣
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٥٤
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٥٥
Exam
ple
2 •
A co
mpa
ny c
urre
ntly
has
an
infr
astr
uctu
re o
f 15
phys
ical
ser
vers
.
•Se
rver
s co
nsum
es p
ower
of
1200
$/ye
ar a
nd m
aint
enan
ce c
ontr
act
with
ve
ndor
of
400$
/yea
r •
IT d
ept
stuf
f spe
nds
2 ho
urs/
wee
k fo
r se
rver
adm
inist
ratio
n ta
sks
and
30
min
/day
for b
acku
p ta
sks.
•
A pr
ojec
t of
virt
ualiz
atio
n at
rat
io o
f 1:
5 is
pro
pose
d, t
he p
rice
of n
ew
serv
ers
are
7k$
each
. •
New
serv
er c
onsu
med
pow
er in
ave
rage
is 1
000$
/yea
r. •
Vmw
are
licen
se is
500
0$/s
erve
r, fr
ee m
aint
enan
ce fo
r fir
st y
ear
then
15%
of
lice
nse
pric
e fo
r eac
h ye
ar a
fter
. •
Empl
oyee
tra
inin
g co
sts
1500
$, a
nd y
ou w
ill t
rain
5 e
mpl
oyee
in t
he f
irst
year
•
assu
me
that
the
re w
ill b
e a
2% in
crea
se in
the
cos
t to
pow
er e
ach
serv
er
in y
ear
3 as
wel
l as
a 3%
incr
ease
in t
he s
erve
r m
aint
enan
ce c
ontr
act
in
year
4.
•As
sum
e sy
s adm
in m
onth
ly sa
lary
= 4
000$
/mon
th
•Bu
ilda
cost
sum
mar
ysp
eare
dsh
eett
oca
lcul
ate
the
redu
ced
expe
nses
٥٦
Curr
ent s
ituat
ion
1.H
ard
cost
s:
po
wer
= 1
200$
/yea
r/se
rver
mai
nten
ance
= 4
00$/
year
/ser
ver
2. S
oft c
osts
:
adm
inist
ratio
n =
2h/w
eek/
serv
er
= 2
* 5
2 =
104
h/se
rver
/yea
r as
sum
e th
at w
orki
ng h
ours
= 8
h/d
ay
adm
inist
ratio
n =
104
/8 =
13
days
/ser
ver/
year
as s
ysad
min
sala
ry =
400
0$/m
onth
= 4
000/
24 =
170
$/d
ay
adm
inist
ratio
n =
13 *
170
= 2
210
$/ye
ar
Dr
. Ahm
ed E
lSha
fee,
ACU
: Fa
ll 20
14, S
elec
ted
Topi
cs in
Com
pute
r Net
wor
ks
٥٧
b
acku
p =
30 m
in/d
ay/s
erve
r
=
.5*5
*52
= 13
0 ho
urs/
serv
er/y
ear
= 13
0/8
= 17
d/s
erve
r/ye
ar
= 17
* 17
0= 2
,890
$ =
2900
$ se
rver
/yea
r
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٥٨
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٥٩
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٦٠
Virt
ualiz
atio
n •
Num
ber o
f mac
hine
s = 1
5/5=
3
•H
ard
cost
mac
hine
s pur
chas
e =
2100
0*3
m
achi
nes m
aint
enan
ce =
400
* 3
(3%
incr
ease
4th
yea
r)
so
ftw
are
= 5
000
* 3
so
ftw
are
mai
nten
ance
= 0
.25*
5000
*3 (e
xcep
t 1st
yea
r)
pow
er =
100
0*3
(2%
incr
ease
3rd
year
)•
Soft
cos
t (sa
me
as c
urre
nt si
tuat
ion)
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٦١
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٦٢
Dr. A
hmed
ElS
hafe
e, A
CU :
Fall
2014
, Sel
ecte
d To
pics
in C
ompu
ter N
etw
orks
٦٣
Than
ks,..
Se
e yo
u ne
xt w
eek
(ISA)
,…
Dr.
Ahm
ed E
lSha
fee,
ACU
: Fa
ll 20
14, S
elec
ted
Topi
cs in
Co
mpu
ter N
etw
orks
٦٤