virtualization to improve data center efficiency

8/21/2019 Virtualization to Improve Data Center Efficiency

1/23

USING VIRTUALIZATIONTO IMPROVE DATA

CENTER EFFICIENCY

USING VIRTUALIZATION TO IMPROVE DATA CENTER EFFICIENCY Página 1 de 23


2/23

ABSTRACT

This pape !"#$ines s!%e !& #he ad'an#ages( )!nsidea#i!ns( p!)esses( andi%p$e%en#a#i!n s#a#egies needed #! ed")e se'e p!*e )!ns"%p#i!n in a da#a)en#e "sing 'i#"a$i+a#i!n #e)hni,"es-

Vi#"a$i+a#i!n has $!ng he$d #he p!%ise !& eneg. sa'ings d"e #! i#s se'e)!ns!$ida#i!n )apa/i$i#ies- This pape p!'ides #h!se esp!nsi/$e &! ed")ingeneg. )!ns"%p#i!n *i#h a des)ip#i!n !& #he ad'an#ages and p!)esses #ha#sh!"$d /e )!nsideed *hen 'i#"a$i+ing se'es in #he da#a )en#e-



3/23

TABLE OF CONTENTS0- SERVER CLASSIFICATION 1IT2IN A TYPICAL DATA CENTER-------------------------------------------------------3

0-0 SERVERS AND ENERGY CONSUMPTION------------------------------------------------------------------------------4

0-5 ACCELERATING BUSINESS SERVICES----------------------------------------------------------------------------------6

0-7 UTILIZATION ACROSS SERVER CATEGORIES-----------------------------------------------------------------------6

0-3 SERVER CONSOLIDATION AND VIRTUALIZATION---------------------------------------------------------------08

5- PREPARING FOR VIRTUALIZATION 9 GAT2ERING DATA-------------------------------------------------------------05

5-0 IDENTIFYING T2E SERVER POPULATION---------------------------------------------------------------------------05

5-5 DETERMINING COMPUTE RESOURCES RE:UIRED-------------------------------------------------------------05

5-7 ESTIMATING CAPACITY RE:UIREMENTS----------------------------------------------------------------------------03

5-3 APPLICATION 1OR;LOAD C2ARACTERIZATION----------------------------------------------------------------0<

7- OT2ER CONSIDERATIONS--------------------------------------------------------------------------------------------------------0=

7-0 METRICS AND MEASUREMENTS----------------------------------------------------------------------------------------0=

7-5 ESTABLIS2 SERVICE LEVEL OB>ECTIVES---------------------------------------------------------------------------0=

7-7 PRIORITIZATION?P2ASES--------------------------------------------------------------------------------------------------06

7-3 TEC2NOLOGY CONSIDERATIONS--------------------------------------------------------------------------------------58

7-@ PROCESS CONSIDERATIONS---------------------------------------------------------------------------------------------58

7-< MEASUREMENTS OF SUCCESS------------------------------------------------------------------------------------------58

3- CONCLUSION---------------------------------------------------------------------------------------------------------------------------50



4/23

INTRODUCTION

Da#a )en#e IT e,"ip%en# di'es #he a%!"n# !& ph.si)a$ in&as#")#"e e-g-( p!*edis#i/"#i!n "ni#s( UPS( genea#!s( )!!$ing "ni#s needed #! %ain#ain #he a'ai$a/i$i#. !& da#a)en#e asse#s- B!#h #he de%and side IT and #he s"pp$. side ph.si)a$ in&as#")#"e !& #heda#a )en#e )!ns"%e eneg.-

On #he IT side( )!%/ining *!$!ads !n#! &e*e se'es )an signi)an#$. i%p!'e #he eneg.

e)ien). !& a da#a )en#e- C!n'ese$.( adding ne* se'es in#! a da#a )en#e *i#h!"# s#)!nsideing #he "#i$i+a#i!n !& eis#ing )!%p"#e n!des *i$$ )a"se an "n*an#ed and a'!ida/$ein)ease !& da#a )en#e eneg. )!ns"%p#i!n- This a$s! h!$ds #"e &! da#a )en#e ph.si)a$ in&as#")#"e- O'eHsi+ing !& p!*e and )!!$inge,"ip%en# is ende%i) #! eis#ing da#a )en#es and epesen#s a )!nsidea/$e *as#e !&eneg.- Changes( ei#he "p ! d!*n( !n #he IT side *i$$ a$s! ha'e an i%pa)# !n #he e)ien).!& #he ph.si)a$ in&as#")#"e s"pp!#ing IT-

The Geen Gid e)!%%ends #he "se !& Da#a Cen#e E)ien). DCE %e#i)s( *hi)h ena/$eda#a )en#e !pea#!s #! ,"i)$. es#i%a#e #he eneg. e)ien). !& #hei da#a )en#es()!%pae #he es"$#s agains# !#he da#a )en#es( and de#e%ine i& an. eneg. e)ien).i%p!'e%en#s need #! /e %ade- A da#a )en#e %"s# dep$!. #he ne)essa. ga"ges( %e#eing(

and $!gging !& da#a #! ena/$e #he a))"a#e and $!ngH#e% %eas"e%en# !& da#a needed in!de &! PUE?DCiE #ending and !#he e)ien). %e#i)s #! /e %eaning&"$-Ad'an)es in dening p!d")#i'i#. indi)a#!s0( pe&!%an)e5 and g!'en%en# p!ga%s7 n!*ae /eginning #! !Je g"idan)e #! p")hases !& )!%p"#e se'es- This g"idan)e he$psp")hases )!nside #he p!d")#i'e *! a )!%p"#e se'e )an ee# &! ea)h *a## !& p!*e#ha# is )!ns"%ed- Se'es ae #he $eading )!ns"%es !& IT p!*e and( as s")h( ae #he &!)"s!& #his pape- S#!age and ne#*!ing e,"ip%en# *i$$ /e #he s"/Ke)# !& &"#"e *!s p!'ided/. The Geen Gid-

Da#a )en#es !en ae p$ag"ed *i#h "nde"#i$i+ed se'es- 2"ge eneg. sa'ings and?!in)eases in p!d")#i'i#. &! $i##$e ! n! addi#i!na$ eneg. )!ns"%p#i!n )an /e ea$i+ed "sing'i#"a$i+a#i!n #e)hn!$!gies-

This pape *i$$ p!'ide #h!se in#ees#ed in eneg. sa'ings *i#h a ne* a'en"e /. *hi)h #!i%%edia#e$. ed")e #hei )"en# eneg. )!ns"%p#i!n and?! s"/s#an#ia$$. ed")e #he a#e !&in)ease !& #hei da#a )en#es &! #he &!eseea/$e &"#"e- 1hi$e 'i#"a$i+a#i!n as a #e)hn!$!g.is in#ees#ing( #his pape *i$$ !n$. p!'ide g"idan)e !n #he s#eps #ha# need #! /e p"# in#!p$a)e #! ep$!i# #his #e)hn!$!g. &! #he epess p"p!se !& eneg. sa'ings-

C!ns!$ida#i!n "sing 'i#"a$i+a#i!n is !ne p!*e&"$ #!!$ #ha# )an /e app$ied #! %an. da#a)en#es #! di'e "p se'e e)ien). and di'e d!*n eneg. )!ns"%p#i!n- This pape *i$$p!'ide #he /a)g!"nd needed #! "ndes#and /!#h #he /"siness and #e)hn!$!g. aspe)#s !&'i#"a$i+a#i!n /e&!e an ad%inis#a#! e%/as !n #he eneg. sa'ings K!"ne. !&'i#"a$i+a#i!n-

This 1hi#e Pape is #he s# pape p"/$ished /. The Geen Gid !n #he eneg. sa'ing aspe)#s!& 'i#"a$i+a#i!n- S"/se,"en# *hi#e papes &!% The Geen Gid *i$$ &"#he des)i/e !#heaspe)#s !& 'i#"a$i+a#i!n /!#h *i#hin #he IT and n!nHIT d!%ains-

0- SERVER CLASSIFICATION 1IT2IN A TYPICAL DATA CENTER

C!%p"#e( s#!age( and ne#*! e,"ip%en# di)#a#es #he a%!"n# !& ph.si)a$ in&as#")#"ee,"ied in a da#a )en#e( in)$"ding p!*e dis#i/"#i!n "ni#s( genea#!s( )!!$ing "ni#s( and!#he IT s"pp!# e,"ip%en#-In addi#i!n( #he epe)#ed g!*#h !& #he da#a )en#e a$s! *i$$ de#e%ine #he e,"ip%en# inp$a)e PDUs( p"%ps( )hi$$e "ni#s( e#)-- The #.pi)a$ da#a )en#e is ped!%inan#$. !))"pied /.$!*H)!s# and "nde"#i$i+ed

'!$"%e se'es( !#he*ise n!*n as =< se'es- Se'es in )!%/ina#i!n *i#h #hei *!$!adsha'e 'a.ing e,"ie%en#s &! pe&!%an)e and "p#i%e( /"# #! si%p$i&. #he dis)"ssi!n( #his



5/23

pape *i$$ )a#eg!i+e #he% as Inn!'a#i!n(0 P!d")#i!n( ! Missi!nHCi#i)a$ see Fig"e 0-Se'es ae genea$$. "sed #! )ea#e( %ain#ain( and ee)"#e s!$"#i!ns !n /eha$& !& /"siness-In s!%e )ases( #he s!$"#i!n is s! i%p!#an# #ha# i# is dee%ed %issi!n )i#i)a$- These /"siness)$assi)a#i!ns di'e #he #.pes !& a)hi#e)#"e( p!)esses( and in&as#")#"e #ha# ae dep$!.eda$!ngside #he s!$"#i!n- These )$assi)a#i!ns a$s! he$p pe!p$e "ndes#and *ha# #.pes !&!pp!#"ni#ies and eJ!# *!"$d /e in'!$'ed in )!ns!$ida#i!n and 'i#"a$i+a#i!n- A$#h!"gh #heeae %an. ideas !n h!* #! )a#eg!i+e se'es( )a#eg!i+a#i!n is n!# #he in#en# !& #his pape- I#*i$$ "se #he #hee /!ad )a#eg!ies !n$. as an a##e%p# #! he$p eades 'is"a$i+e #hei!pp!#"ni#ies-

Figure 1. Tyi!"# $er%er !"&eg'ry er!e(&"ge

M")h !& #he p!$i&ea#i!n !& '!$"%e se'es is d"e #! #he need #! ,"i)$. inn!'a#e and de$i'es!$"#i!ns #!#he %ae#p$a)e- Ins#ead !& #aing 05 %!n#hs ! $!nge #! dep$!. app$i)a#i!ns in $age s)a$e(IT p!&essi!na$s *!ing in shaedH)!%p"#e en'i!n%en#s )an p!'isi!n ne* se'es anddep$!. app$i)a#i!ns in *ees "sing '!$"%e se'es- Pe!p$e )ea#ing s!$"#i!ns in #hese shaedH)!%p"#e en'i!n%en#s #.pi)a$$. ha'e /een &!)"sed !n speed and ei/i$i#.-

These epesen# Inn!'a#i!n en'i!n%en#s( *hi)h ae "sed #! in'en# ne* p!d")#s( %!di&.eis#ing p!d")#s( de'e$!p ! enhan)e p!)esses #ha# %ae #he )!%pan. %!e )!%pe#i#i'e! p!d")#i'e( and %")h %!e- These en'i!n%en#s in)$"de se'es #.pi)a$$. e&eed #! as Tes#( De'e$!p%en#( :"a$i#. Ass"an)e( V!$"%e( e#)- In addi#i!n #! e,"iing &as# dep$!.%en#(#he Inn!'a#i!n en'i!n%en# a$#ena#es /e#*een pei!ds !& a)#i'e "se and pei!ds !&

ina)#i'i#.- D"ing #i%es !& a)#i'i#.( 'aia#i!ns in da#a( "ses( #ansa)#i!n a#es( !pea#ings.s#e% pa#)h $e'e$s( and !#he )hanges !))" !n a eg"$a /asis in !de #! p!pe$. de'e$!pand #es# s!$"#i!ns- The *!$!ads #.pi)a$$. ae is!$a#ed #! ed")e #he i%pa)# !& #h!se )hanges!n !#he "ses *h! a$s! ae inn!'a#ing- On)e a s!$"#i!n is de'e$!ped in #he Inn!'a#i!nen'i!n%en#( #he *!$!ad is #.pi)a$$. %!'ed in#! a P!d")#i!n en'i!n%en#-

The P!d")#i!n en'i!n%en# is !ne *hee )hange is %")h %!e )!n#!$$ed and s)a$a/i$i#. ise#e%e$. i%p!#an#- Dep$!.%en# speed and ei/i$i#. #ae a /a) sea# #! se'i)e $e'e$e,"ie%en#s- S!%e !& #he s!$"#i!ns *i#hin an !gani+a#i!n ae 'i#a$ #! #he /"siness and%!'e &!% #he inn!'a#i!n )a#eg!. !& s.s#e%s #! a Missi!n Ci#i)a$ En'i!n%en# *hen p$a)edin#! p!d")#i!n- In !#he *!ds( i& #he s!$"#i!n *ee #! /e)!%e "na'ai$a/$e &! an. pei!d !&#i%e( i# *!"$d ha'e a se'ee i%pa)# !n #he /"siness- Tha# i%pa)# )!"$d /e #he i%%edia#e

0 H B. deni#i!n( an.#hing #ha# is n!# p!d")#i!nHe$a#ed ! %issi!n )i#i)a$

USING VIRTUALIZATION TO IMPROVE DATA CENTER EFFICIENCY Página ) de 23


6/23

$!ss !& d!$$as( #he $!ss !& )"s#!%e $!.a$#.( ! s!%e !#he signi)an# eJe)# !n #he /"siness- These s!$"#i!ns #end #! /e p$a)ed in an in&as#")#"e #ha# *i$$ g"aan#ee high pe&!%an)eand a'ai$a/i$i#.( !en a# a signi)an# )!s#- 1hi$e %issi!nH)i#i)a$ se'es ge# a g!!d dea$ !&a##en#i!n and )!ns"%e %an. %!e es!")es #han #he #.pi)a$ P!d")#i!n se'e( #he.n!%a$$. a))!"n# &! #he s%a$$es# n"%/e !& se'es in #he da#a )en#e-

A$#h!"gh #his pape )!"$d spend a gea# dea$ !& #i%e de/a#ing h!* %an. )a#eg!ies !&se'es #hee ae( #he p!in# #! /e %ade hee is #ha# diJeen# se'es( *!$!ads( ands!$"#i!ns e,"ie diJeen# #.pes !& in&as#")#"e and p!)esses #! e%/a)e 'i#"a$i+a#i!n &!eneg. e)ien).- As an ea%p$e( i# is "n$ie$. #ha# an IT ad%inis#a#! *!"$d "n anInn!'a#i!n *!$!ad !n a se'e a$!ngside Missi!nHCi#i)a$ *!$!ads-1hen de#e%ining *hee #! s#a# a )!ns!$ida#i!n and 'i#"a$i+a#i!n eJ!#( i# %"s# /e"ndes#!!d #ha# #he Inn!'a#i!n )a#eg!. is *hee #! nd #he %!s# id$e se'es and #hese'es e,"iing #he &e*es# )!%p"#e es!")es- This aea epesen#s #he /es# !pp!#"ni#. &!)!ns!$ida#i!n- I# is hee #ha# )!ns!$ida#i!n and 'i#"a$i+a#i!n *i$$ p!'ide #he gea#es# eneg.ed")#i!n in #he da#a )en#e-

The e%ainde !& #his pape *i$$ e&e #! a sa%p$e en'i!n%en# #ha# in)$"des @88 se'es(*hi)h ae )a#eg!i+ed in Ta/$e 0 /e$!*-

T"*#e 1. +re",-'( '/ $er%er$ i( $"0#e -"&" !e(&er e(%ir'(0e(&

One s#"d. &!% #he VM*ae In&!%a#i!n 1aeh!"se has e'ea$ed #ha# %!e #han 58 !& #hese'es assessed /. #he VM*ae Capa)i#.P$anne #!!$ in 5884 ae "nning /e$!* 8-@"#i$i+a#i!n see Fig"e 5- This in&!%a#i!n is da*n &!% da#a )!$$e)#ed &!% %!e #han 788(888 se'es "nning in#h!"sands !& )!%panies a!"nd #he *!$d- App!i%a#e$. 4@ !& #he assessed se'es *ee"nning /e$!* @ "#i$i+a#i!n- This da#a de%!ns#a#es #ha# #hee is a signi)an# !pp!#"ni#. #! ed")e #he n"%/e !&ph.si)a$ se'es and sa'e a #e%end!"s a%!"n# !& eneg. si%p$. /. e$i%ina#ing #h!sese'es #ha# ae n! $!nge in "se( shaing se$d!%H"sed se'es( ed")ing &a%s !& se'es#ha# s"pp!# a )!%%!n app$i)a#i!n( and e%p$!.ing 'i#"a$i+a#i!n-

USING VIRTUALIZATION TO IMPROVE DATA CENTER EFFICIENCY Página de 23


7/23

Figure 2. Pr'!e$$'r u&i#i"&i'(

Red")ing #he ph.si)a$ se'e )!"n# si%p$ies #he IT in&as#")#"e and d!es %!e #han K"s#ed")e eneg. )!ns"%p#i!n- A si%p$ied s#")#"e( gi'en $!*e se'e )!"n#s( es"$#s in

/e##e se'i)e $e'e$s i-e-( #he g"aan#ee !& )!%p"#e se'i)e p!'ided #! an app$i)a#i!n( /!#h&!% a ph.si)a$ se'e and /"siness se'i)e pespe)#i'e-

0-0 SERVERS AND ENERGY CONSUMPTION

The eneg. )!ns"%p#i!n !& a se'e is n!# a $inea e$a#i!nship *i#h *! ! #he p!d")#i'i#.!"#p"# !& #ha#se'e- An id$e se'e %a. )!ns"%e %!e #han 38 !& #he p!*e #ha# a &"$$. "#i$i+ed se'ed!es-

I& #he #.pi)a$ se'e is "nning a# @ "#i$i+a#i!n and #he #age# "#i$i+a#i!n a#e is !n$. @8(#hen eneg. )!ns"%p#i!n )!"$d /e gea#$. ed")ed /. i%p!'ing se'e "#i$i+a#i!n and

#"ning !J "n"sed se'es-A)!ss #he 'ai!"s )a#eg!ies !& se'es( "#i$i+a#i!n )!"$d /e seen a# app!i%a#e$. 7 &!Inn!'a#i!n se'es(


8/23

I%p!'ing eneg. e)ien). "sing 'i#"a$i+a#i!n is an i%p!#an# a)#i'i#.- This s#"d. &!"nd #ha#a# 08 "#i$i+a#i!n( #he se'e "#i$i+ed 047 *a##s !& p!*e- Adding an addi#i!na$ 08 !& $!ad(*hi)h #!! #he %a)hine #! 58 "#i$i+a#i!n( !n$. in)eased #he p!*e "#i$i+a#i!n &!% 047*a##s #! 0=6 *a##s- In Fig"e 7 /e$!*( #he /$"e $ine epesen#s #he a%!"n# !& in)e%en#a$p!*e $!ad p$a)ed !n a %a)hine &! ea)h addi#i!na$ 08 !& p!)ess! "#i$i+a#i!n- A# 088p!)ess! "#i$i+a#i!n( #he p!*e "#i$i+a#i!n peaed a# 54< *a##s- As p!)ess! "#i$i+a#i!nin)eases( p!*e "#i$i+a#i!n in)eases a# a %")h $!*e a#e- See Fig"e 3-

Figure 3. Per/'r0"(!e &' 'er r"&i'

SPEC and #he /en)h%a na%e SPECp!*essK TM ae #ade%as !& #he S#andad

Pe&!%an)e E'a$"a#i!n C!p!a#i!n- F! #he $a#es# SPECp!*essK588= /en)h%a es"$#s('isi# h##pQ??***-spe)-!g?p!*essK588=?es"$#s?p!*essK588=-h#%$-See h##pQ??***-spe)-!g &! %!e in&!%a#i!n a/!"# SPEC-

In Fig"e 3( #he s# /a )ha# sh!*s #he eJe)# !& )!%/ining #*! #.pi)a$ *!$!ads in#! a'i#"a$ en'i!n%en# "sing da#a p!in#s &!% Fig"e 7- The es"$# is pedi)#ed #! /eapp!i%a#e$. 08 p!)ess! "#i$i+a#i!n and a 047 *a## $!ad- C!%/ining en!"gh *!$!ads#!ge#he #! a)hie'e a @8 p!)ess! "#i$i+a#i!n *!"$d es"$# in a 578 *a## $!ad- I& i# #!! 08*!$!ads #! a)hie'e #his es"$# 08 ph.si)a$ se'es )!ns!$ida#ed in#! 0( #he da#a )en#e*!"$d ed")e i#s eneg. e,"ie%en# &!% 0(478 *a##s 08 se'es 047 *a##s ea)h #! !n$.578 *a##s 0 se'e a# @8 "#i$i+a#i!n 578 *a##s- C!ns!$ida#i!n .ie$ds a sa'ings !& a$%!s#0(@88 *a##s in #his s)enai! ! a sa'ings !& =4-

USING VIRTUALIZATION TO IMPROVE DATA CENTER EFFICIENCY Página de 23

http://www.spec.org/power_ssj2008/results/power_ssj2008.htmlhttp://www.spec.org/http://www.spec.org/power_ssj2008/results/power_ssj2008.htmlhttp://www.spec.org/


9/23

Figure 4. I(!re0e(&"# 'er !'($u0&i'(

0-5 ACCELERATING BUSINESS SERVICES

In addi#i!n #! p!d")ing eneg. sa'ings( 'i#"a$i+a#i!n #e)hn!$!g. p!%!#es #he a))e$ea#i!n!& /"siness se'i)es- B. se##ing "p 'i#"a$ %a)hine #e%p$a#es &! )!%%!n se'e)!ng"a#i!ns( dep$!.ing a se'e is signi)an#$. &as#e #han ins#a$$ing an !pea#ing s.s#e%and app$i)a#i!n !n a /ae %e#a$ se'e p$a#&!%-I# is e'en &as#e #han ins#a$$ing an app$i)a#i!n !n an eis#ing se'e p$a#&!% #ha# a$ead. hasan !pea#ing s.s#e% and /ase )!ng"a#i!n $!aded-

The a/i$i#. #! dep$!. 'i#"a$ se'es !n de%and a$$!*s an !gani+a#i!n #! a))e$ea#e i#s/"siness se'i)es- T.pi)a$$.( !/#aining a ne* se'e e,"ies /"dge#ing and nan)ia$ app!'a$s( p$a#&!%se$e)#i!n and si+ing( 'end! se$e)#i!n( p!'isi!ning( ins#a$$a#i!n( pa#)hing( se)"ing( andne#*!ing- Dep$!.ing 'i#"a$ se'es !J !& a #e%p$a#e %eans d.na%i) a$$!)a#i!n !& ne*)apa)i#. *i#hin %in"#es !& a /"siness se'i)e e,"es#- Thee&!e( /!#h eneg. e)ien). and i%p!'ed /"siness se'i)es )an /e a)hie'ed *i#h'i#"a$i+a#i!n #e)hn!$!g.-

0-7 UTILIZATION ACROSS SERVER CATEGORIES

The #.pi)a$ Inn!'a#i!n en'i!n%en# )!n#ains a $age n"%/e !& se'es #ha# ha'e $!*"#i$i+a#i!n )haa)#eis#i)s and "ndened s)hed"$es !& "sage- S!%e Inn!'a#i!n se'es %a. g!da.s ! *ees *i#h!"#/eing "sed- 2!*e'e( *hen in "se( an Inn!'a#i!n se'e %a. )!ns"%e e'e. es!")ea'ai$a/$e !n #he se'e- These se'es ha'e a high$. 'aia/$e *!$!ad-

The P!d")#i!n )a#eg!. se'es "s"a$$. has %!e "ses pe app$i)a#i!n *!$!ad and highe#ansa)#i!n '!$"%es #han #he Inn!'a#i!n se'es )a#eg!.( /"# &e*e se'es )a#eg!i+ed asMissi!nH Ci#i)a$- Man. P!d")#i!n *!$!ads ha'e a pa##en !& "#i$i+a#i!n #ha# in)eases a# #hes#a# !& #he /"siness da. and de)eases a# #he end !& #he /"siness da.- S!%e !& #hese

se'es %a. ha'e high "#i$i+a#i!n a#es( /"# "#i$i+a#i!n is #.pi)a$$. in #he @ ange d"ingn!%a$ /"siness h!"s- Thee is a $!* p!/a/i$i#. #ha# a signi)an# n"%/e !& #hese se'es



10/23

has p!)ess! "#i$i+a#i!n !& %!e #han 78- This dis)"ssi!n d!es n!# e&e #! %e%!.a$$!)a#i!ns( *hi)h #.pi)a$$. !n$. 'a. 3 d"ing #he #i%e a se'e is p!*eed !n-

Missi!nHCi#i)a$ se'es a$s! ha'e #.pi)a$ p!)ess! "#i$i+a#i!n a#es /e$!* 78- I& #hesese'es ae "nning a# a $!* "#i$i+a#i!n( i# %a. /e d"e #! !'eHengineeing !& #he s!$"#i!n in!de #! ens"e high se'i)e $e'e$s *i#h!"# )!n)en &! eneg. )!ns"%p#i!n- In !#he*!ds( #he. %a. !n$. e,"ie #*! )!es !& p!)ess! )apa)i#. &! #he n!%a$ *!$!ad( /"##he. ha'e eigh# ins#a$$ed #! ens"e en!"gh )apa)i#. a# pea h!"s ! in #he e'en# !&"n&!eseen g!*#h in de%and- F! %!s# "ses !& Missi!nHCi#i)a$ se'es( "#i$i+a#i!n is n!# a)!n)en %ee#ing #he e,"ied se'i)e $e'e$ is- Un#i$ e)en#$.( %!e se'es and $!*e"#i$i+a#i!n has /een an a))ep#ed pa)#i)e #! g"aan#ee pe&!%an)e- 2igh a'ai$a/i$i#. and&ai$!'e )apa/i$i#. *as %!e i%p!#an# #han "#i$i+a#i!n pe)en#ages-

A)!ss a$$ #he )a#eg!ies !& se'es( #hee ae s!%e #ha# "n a# %!e #han 78 "#i$i+a#i!n( /"##ha# is n!# )!%%!n- The #.pi)a$ se'e "ns a# $ess #han @ "#i$i+a#i!n and %!e #han 68 !&a$$ =< se'es "n a# $ess #han 08 "#i$i+a#i!n- This %eans #ha# a $age !pp!#"ni#. eis#s #!)!ns!$ida#e se'es in a #.pi)a$ da#a )en#e-Re%e%/e( "#i$i+a#i!n d!es n!# #e$$ #he *h!$e s#!.- A @ "#i$i+a#i!n a#e !n a 488 M2+ sing$eH)!e se'e is n!# #he sa%e as @ "#i$i+a#i!n !n a 3H)!e( 7-< G2+ %a)hine- The se)!ndea%p$e e,"ies %")h %!e p!)essing )apa)i#. #han #he s#-

O& )!"se( p!)ess! )!ns"%p#i!n is n!# #he !n$. )!n)en- The #.pi)a$ =< se'e "#i$i+esapp!i%a#e$. 0-@ GB !& %e%!.( /"# #ha# a))!"n#s &! a/!"# ha$& !& #he %e%!. #ha# isn!%a$$. ins#a$$ed !n #hese se'es &! a "#i$i+a#i!n !& app!i%a#e$. @8- Ea)h %e%!.DIMM )!ns"%es addi#i!na$ eneg. e'en *hen id$e-

A$#h!"gh $!)a$ s#!age has highe a#es !& )!ns"%p#i!n( #he #.pi)a$ se'es #h!"ghp"#in&as#")#"e &! /!#h s#!age and ne#*! "#i$i+es $ess #han 0 !& #he se'es )apa)i#.( as#he a'eage n"%/e !& /.#es pe se)!nd passed #h!"gh #he in&as#")#"e is a!"nd 788(888/.#es pe se)!nd #h!"gh #he dis s"/s.s#e% and 0@8(888 /.#es pe se)!nd #h!"gh #hene#*!-

0-3 SERVER CONSOLIDATION AND VIRTUALIZATIONSe'e )!ns!$ida#i!n )an /e a)hie'ed in se'ea$ *a.s- The #*! #.pi)a$ app!a)hes aeQ0 )!%/ining app$i)a#i!ns !n#! a sing$e se'e and a sing$e !pea#ing s.s#e% ins#an)e and5 'i#"a$i+ing app$i)a#i!n *!$!ads in 'i#"a$ %a)hines and h!s#ing #he% !n a h.pe'is!5-

As #he e)!n!%. epanded in #he $a#e 06=8s and 0668s( )!%panies &!)"sed !n speedH#!H%ae#- N! $!nge *as i# a))ep#a/$e #! *ai# 0= %!n#hs &! app$i)a#i!ns #! /e de'e$!ped( anda )en#a$i+ed de'e$!p%en# app!a)h *as n! $!nge 'ia/$e- Man. )!%panies )h!se ade)en#a$i+ed %!de$( /".ing %!e and %!e =< se'es as #he pi)es *en# $!*e and $!*e-1hen #he e)!n!%. &a$#eed in 5880( CIOs *ee ased #! $!! &! *a.s #! ed")e !pea#ing)!s#s-

C!%/ining app$i)a#i!ns !n#! a sing$e se'e *as !ne *a. #! ed")e #he n"%/e !& se'es ina da#a )en#eand #hee&!e $!*e )!s#s- In 5880( #he /"$ !& '!$"%e se'es &!"nd in a da#a )en#e #.pi)a$$.s"pp!#ed 3GB ! $ess !& RAM- Be)a"se #he #.pi)a$ app$i)a#i!n *!$!ad e,"ied a $i##$e %!e #han 0 GB!& RAM( #he /es# )!ns!$ida#i!n p!ssi/$e *as a 7Q0 a#i!-

5 A h.pe'is! is s!*ae #ha# is )apa/$e !& h!s#ing %"$#ip$e 'i#"a$ %a)hines- 2.pe'is!s!*ae a$$!*s!pea#ing s.s#e%s and app$i)a#i!ns #ha# !#he*ise *!"$d "n a$!ne !n asing$e ph.si)a$ se'e #! "n !n a

se'e shaed *i#h n"%e!"s !#he !pea#ing s.s#e%s and app$i)a#i!ns-



11/23

A$#h!"gh a*aeness !& $!* se'e "#i$i+a#i!n eis#ed( #he p!)ess and %e#h!d!$!g. &!)!%/ining app$i)a#i!ns !n#! a sing$e se'e *as n!# *e$$ "ndes#!!d- I# *!"$d #ae asigni)an# a%!"n# !& *! /. /"siness and IT epe#s *i#hin an !gani+a#i!n #! 'ei&. #ha#%"$#ip$e *!$!ads i-e-( app$i)a#i!n *!$!ads )!"$d /e "n !n a sing$e !pea#ing s.s#e% ina P!d")#i!n en'i!n%en#- E'en i& #es#s p!'ed #ha# #he *!$!ads )!"$d )!eis# in ap!d")#i!n en'i!n%en#( #hee *as n! ass"an)e #ha# %!di)a#i!ns #! #he !pea#ing s.s#e%(app$i)a#i!n s!*ae( ! !#he )hanges *!"$d n!# )a"se app$i)a#i!n &ai$"es-



12/23

The e$a#ed %ain#enan)e and iss"es ass!)ia#ed *i#h #es#ing "pda#es #! #he !pea#ing s.s#e%and app$i)a#i!ns se'ed as a /aie #! #he )!ns!$ida#i!n app!a)h !& )!%/ining %"$#ip$e!pea#ing s.s#e%s andapp$i)a#i!ns !n#! !ne se'e- Basi) )!s#( e$ia/i$i#.( and se'i)e $e'e$ iss"es ep# %!s# da#a)en#es &!% p!)eeding *i#h ph.si)a$ )!ns!$ida#i!n- This #.pe !& )!ns!$ida#i!n *as %!s#eJe)#i'e in ed")ing #he n"%/e !& se'es #! s"pp!# %"$#ip$e ins#an)es !& $ie app$i)a#i!ns-Da#a/ase( Mai$ and C!$$a/!a#i!n( and Thin C$ien# App$i)a#i!n Se'es ae a$$ ea%p$es !&app$i)a#i!ns #ha# %a. /ene# &!% )!$$apsing %"$#ip$e ins#an)es ! *!$!ads in#! $essph.si)a$ se'es-

Vi#"a$i+a#i!n is a &!% !& )!ns!$ida#i!n- The p!)ess !& 'i#"a$i+ing an app$i)a#i!n *!$!aden)aps"$a#es /!#h #he !pea#ing s.s#e% and #he app$i)a#i!ns in#! a 'i#"a$ %a)hine- Ah.pe'is! "ns !n a se'e p$a#&!% #ha# h!s#s !ne ! %!e 'i#"a$ %a)hines- F!% a $es.s#e% s#andp!in#( a 'i#"a$ %a)hine is a se# !& $es #ha# esides !n n!nH'!$a#i$e s#!age#.pi)a$$. *i#hin a se'e ! inside a SAN- One $e denes #he es!")es #ha# #he 'i#"a$%a)hine ge#s #! )!ns"%e /ased "p!n paa%e#es dened /. #he ad%inis#a#!-Sin)e ea)h 'i#"a$ %a)hine has i#s !*n !pea#ing s.s#e%( #he %ain#enan)e iss"es ass!)ia#ed*i#h #he ph.si)a$ )!ns!$ida#i!n app!a)h d! n!# aise- P$a)ing $i%i#s !n ea)h 'i#"a$ %a)hineas #! h!* %")h !& an.gi'en es!")e i# )an )!ns"%e a$$e'ia#es )!n)ens a/!"# !ne *!$!ad !'e#aing a$$ #hees!")e !n a %a)hine- This ena/$es diJeen# #.pes !& *!$!ads *i#h 'a.ing )haa)#eis#i)s

#! /e )!%/ined eJe)#i'e$. #! i%p!'e se'e "#i$i+a#i!n-

Se'e )!ns!$ida#i!n is n!# a$*a.s #he igh# ans*e- Missi!nHCi#i)a$ app$i)a#i!n *!$!ads%a. /e 'i#"a$i+ed #! p!'ide /e##e /"siness )!n#in"i#. /. %ee#ing se'i)e $e'e$s( /"# i# isn!# ad'isa/$e #! )!%/ine #his 'i#"a$ %a)hine *i#h an!#he 'i#"a$ %a)hine- In #he Missi!nHCi#i)a$ en'i!n%en#( p!#e)#i!n !& se'i)e $e'e$s is %")h %!e i%p!#an# #han i%p!'ing"#i$i+a#i!n( a)hie'ing eneg. sa'ings( and %ini%i+ing is !& d!*n#i%e &! #he app$i)a#i!nsiden#ied as %issi!n )i#i)a$-

In addi#i!n( *!$!ads in #he Inn!'a#i!n en'i!n%en# )an /e "npedi)#a/$e( s! i# %a. %aesense n!# #! )!%/ine #h!se *i#h p!d")#i!n app$i)a#i!ns #ha# e,"ie %!e s#a/i$i#. and &a"$##!$ean)e-

Se'es #ha# ha'e pi'a).( se)"i#.( ! eg"$a#!. es#i)#i!ns ! "$#aHhigh se'i)e $e'e$e,"ie%en#s #end n!# #! /e #he pi%a. ! s# )andida#es &! 'i#"a$i+a#i!n ! )!ns!$ida#i!n-I#s $ie$. #ha# !#he se'es a$s! ae n!# g!!d )andida#es d"e #! #e)hni)a$ ! /"siness)!nsidea#i!ns-

5- PREPARING FOR VIRTUALIZATION 9 GAT2ERING DATA

5-0 IDENTIFYING T2E SERVER POPULATION

The s# s#ep #!*ad 'i#"a$i+a#i!n is dis)!'eing a$$ #he se'es in #he !gani+a#i!n and

#aing an in'en#!.!& #hei )!%p"#e es!")es a$!ng *i#h #hei ass!)ia#ed app$i)a#i!n *!$!ads- Thisin&!%a#i!n is needed #! )!ns#")# a p$an &! )!ns!$ida#i!n "sing 'i#"a$i+a#i!n- I# is eas. #!$!se #a) !& se'es as #i%e g!es /.( as %eges and a),"isi#i!ns #ae p$a)e( as pe!p$ep!)"e se'es *i#h!"# g!ing #h!"gh )en#a$ IT( ! as se'es ae e#ied ! ep"p!sed- Thein'en#!. p!)ess %a. e'ea$ se'es #ha# ae *e$$H%anaged and ha'e )$ea !*neshipes#a/$ished as *e$$ as se'es #ha# ae n!# /eing "sed a# a$$ and p!ssi/$. *ee a/and!ned-I& an !gani+a#i!n has %"$#ip$e ne#*!s( d!%ains( ! die)#!ies( e'e. !ne !& #he% needs #!/e in'en#!ied- Thee ae #!!$s and se'i)es a'ai$a/$e &!% n"%e!"s 'end!s #ha# )ana"#!%a#e #he in'en#!. and dis)!'e. p!)ess-

Ae !/#aining #he se'e in'en#!. in&!%a#i!n( g!"p #he es!")es in#! p!!$s !& *!$!ads

#ha# )an )!eis# #!ge#he- I#s a$ead. /een indi)a#ed #ha# Inn!'a#i!n se'es and P!d")#i!nse'es *!"$d %!s# $ie$. n!# )!eis#- As %en#i!ned ea$ie( s!%e !& #h!se se'es %a. ha'e



13/23

#e)hni)a$( p!$i#i)a$( se)"i#.( pi'a).( ! eg"$a#!. )!n)ens #ha# pe'en# #he% &!% shainges!")es- T! *! #h!"gh #his $is# !& )!n)ens( .!" IT depa#%en# %a. need #! as a &e*%!e ,"es#i!ns a/!"# #he *!$!ads- Fi'e i#e%s !& in&!%a#i!n ae neededQ

• 1h! !*ns #he se'e• 1ha# is #he p"p!se !& #he se'e• 1ha# is #he se'i)e $e'e$ e,"ie%en#• 1ha# is #he $!)a#i!n !& #he se'e• Is #hee a e,"ie%en# &! #his *!$!ad #! e%ain !n a dedi)a#ed ph.si)a$ es!")e

Ans*eing #hese ,"es#i!ns a$$!*s .!" #! p!!$ *!$!ads in#! g!"ps- Y!" #hen )an de#e%ine#he !'ea$$ g!"p e,"ie%en# &! )!%p"#e es!")es- F! ea%p$e( #he ee)ise %a. .ie$d a$is# !& 088 Inn!'a#i!n *!$!ads #ha# a$$ eside in #he sa%e $!)a#i!n- Y!" #hen )an de#e%ine#he es!")e e,"ie%en#s &! #he en#ie g!"p- In #his )ase( .!" %a. de#e%ine #ha# .!"need @ #! 08 se'es #! s"pp!# #he es!")e e,"ie%en#s !& #hese 088 *!$!ads-

As a pa# !& #he in'en#!. p!)ess( #he &!$$!*ing %ini%"% in&!%a#i!n sh!"$d /e ga#heedQ• Mae• M!de$• P!)ess!s s!)e#s( )!es( #heads( speed( )a)he( &!n# side /"s• Me%!. si+e and speed• Ne#*! n"%/e !& p!#s( speed !& ea)h p!#• L!)a$ s#!age n"%/e !& dis di'es( )apa)i#.( RAID )!ng"a#i!n

• Opea#ing S.s#e% and pa#)h $e'e$• App$i)a#i!ns ins#a$$ed• Se'i)es "nning

>"s# /e)a"se s!*ae is ins#a$$ed !n a se'e d!es n!# %ean #ha# i# is /eing "sed- A )he) !&#he se'i)es #ha# ae "nning %a. /e##e indi)a#e *hi)h s!*ae is in "se- 2!*e'e( n!# a$$s!*ae e,"ies a se'i)e #! /e a/$e #! ee)"#e( s! in s!%e )ases( #he ins#a$$ed s!*ae $is#%a. /e a$$ #ha# is a'ai$a/$e- Man. 'end!s as &! and e)!d #he na%e !& #he ins#a$$e and#he )!%pan. na%e d"ing #he ins#a$$a#i!n- This in&!%a#i!n sh!"$d /e )!$$e)#ed as pa# !& #he

s!*ae in'en#!. in !de #! he$p iden#i&. se'e !*neship-

5-5 DETERMINING COMPUTE RESOURCES RE:UIRED

1ha# is needed ne# is a %e#h!d #ha# es#i%a#es #he p!)ess! es!")e e,"ied &! anapp$i)a#i!n *!$!ad in a n!%a$i+ed &!%- Gi'en #ha# #he a'eage ep!#ed "#i$i+a#i!n &!se'es a!"nd #he *!$d is nea @( an e#e%e$. s)ien#i) %e#h!d &! n!%a$i+ing #hisin&!%a#i!n is n!# needed "n#i$ a'eage "#i$i+a#i!n a#es ae in)eased a/!'e @8-

The easies# %e#h!d( and !ne #ha# is "sed /. #he 'end!s p!'iding )!ns!$ida#i!n and ana$.sis#!!$s( is #! si%p$. %"$#ip$. #he ep!#ed "#i$i+a#i!n P!)ess! "#i$i+ed /. #he #!#a$p!)ess! )apa)i#. %ai%"% p!)ess! &e,"en). W n"%/e !& p!)ess!s W n"%/e !&)!es- This p!d")es a M2+ e,"ie%en# #ha# )an /e app$ied #! #age# se'es- Y!" )an ene#his )a$)"$a#i!n /. n!%a$i+ing &! %"$#iH)!e !'ehead as *e$$- Re%e%/e #ha# #he a'eagep!)ess! is "nde"#i$i+ed and #.pi)a$$. is n!# #he es!")e #ha# $i%i#s )!ns!$ida#i!n-

In #he in&!%a#i!n s"'e. !& %a)hines assessed in #he 5884 Capa)i#.P$anne %en#i!nedea$ie( #he a'eage ep!#ed "#i$i+a#i!n *as @-7


14/23

#han 4-5 G2+ !& p!)essing p!*e- Using #he a'eage pea s"s#ained $!ad n"%/es( #his%eans #ha# 05 #.pi)a$ *!$!ads )!"$d /e )!%/ined in#! a sing$e se'e-

The ea$i#. is #ha# se'es d! n!# a$$ pea a# #he sa%e #i%e- The a)#"a$ "#i$i+a#i!n !& a 05Q0)!ns!$ida#i!n a#i! *!"$d %!s# $ie$. "n *e$$ /e$!* #he @8 #age#- I# %"s# /e n!#ed #ha# #hisis an a'eage a%!ng a$$ se'es assessed( and #he s"'e. d!es n!# %ae i# p!ssi/$e #!iden#i&. ea)h se'e as *he#he i# is an Inn!'a#i!n( P!d")#i!n( ! Missi!nHCi#i)a$ se'e- I# is$!gi)a$ #! ass"%e #ha# )apa)i#. "#i$i+a#i!n a#es ae $!*es# in #he Inn!'a#i!n en'i!n%en# andhighes# in #he Missi!nHCi#i)a$ se'e en'i!n%en#- I# a$s! is $!gi)a$ #! ass"%e #ha#)!ns!$ida#i!n a#es )an /e %")h highe #han 05Q0 in #he Inn!'a#i!n en'i!n%en# and $!*e in#he Missi!nHCi#i)a$ en'i!n%en#-

The a'eage da#a )en#e se'e has 5-< GB !& RAM ins#a$$ed and )!ns"%es app!i%a#e$.37-@ !& #ha# a%!"n# !& %e%!.( ! 0-03@ GB- A )!ns!$ida#i!n a#i! !& 05Q0 di)#a#es #ha# 0<GB !& RAM *i$$ need #! /e ins#a$$ed in a 'i#"a$ h!s# #! s"pp!# #his a#i!- On)e a se'e s#a#s"p and !pens i#s pi%a. app$i)a#i!ns( #he %e%!. a$$!)a#i!n #.pi)a$$. 'aies !n$. s$igh#$.(a/!"# 3- Thee&!e( ha'ing a'ai$a/$e( "na$$!)a#ed %e%!. in a se'e is n!# as ne)essa. asi# is &! p!)ess! )apa)i#.( *hee de%and )an ")#"a#e /. %!e #han 088- The #.pi)a$ se'e pe&!%s 7@ ph.si)a$ dis I?O !pea#i!ns pe se)!nd d"ing /"siness h!"s-Pea s"s#ained $!ads a'eage 05@ ph.si)a$ dis I?O !pea#i!ns pe se)!nd- T!da.s se'esae p"p!#ed #! s"pp!# #ens !& #h!"sands !& I?O !pea#i!ns pe se)!nd( #h"s %aing a

)!ns!$ida#i!n a#i! !& 05Q0 e#e%e$. d!a/$e- The a'eage n"%/e !& /.#es pe se)!nd#h!"gh #he dis in&as#")#"e in)$"ding eads and *i#es is app!i%a#e$. 358(888 *i#h apea s"s#ained $!ad !& a$%!s# 5-= %i$$i!n- Again( se'es #!da. ha'e )apa)i#. #ha# &ae)eeds #he es#i%a#e !& )!%/ining 05 #.pi)a$ se'es #!ge#he-

1hi$e %!s# se'es #!da. ha'e #*! ne#*! in#e&a)e )ads ins#a$$ed *i#h #he )apa/i$i#. !&#ans&eing 0 GB !& da#a pe se)!nd( #he a'eage n"%/e !& /i#s pe se)!nd sen# #h!"gh#.pi)a$ se'e in#e&a)es is app!i%a#e$. 0 M/ps( ! -0 !& #he #!#a$ )apa)i#.- E'en a# peas"s#ained $!ads( #he de%and !n$. )$i%/s #! @-= M/ps( ! s$igh#$. "nde 0 "#i$i+a#i!n !& asing$e ne#*! in#e&a)e )ad-

As a es"$#( )!ns!$ida#i!n a#i!s in #he 08Q0 #! 0@Q0 ange )an /e a)hie'ed *i#h!"# p$a)ing

s#ess !n #he se'e es!")es- 2!*e'e( e'e. !gani+a#i!n )!n#ains se'es #ha# ha'e highde%ands p$a)ed !n #he%-A$s!( #hee ae se'es *i#h "#i$i+a#i!n pa##ens #ha# ")#"a#e #hese se'es !))asi!na$$.ha'e e#e%e$. high de%ands p$a)ed !n #he%- These sh!"$d /e a'!ided in ini#ia$)!ns!$ida#i!n eJ!#s( /"# &!#"na#e$. #he. #end #! %ae "p a 'e. s%a$$ pe)en#age !& se'esin #he da#a )en#e- The. #.pi)a$$. epesen# !n$. 7 #! @ !& #he se'e in&as#")#"e($ea'ing #he 'as# %aK!i#. !& #he in&as#")#"e as )andida#es &! 'i#"a$i+a#i!n-A$s!( p$a)e%en# is n!# pe%anen# in a 'i#"a$i+ed en'i!n%en#- I& a )!%/ina#i!n !& *!$!ads)a"ses a )i#i)a$ p!)ess! $!ad )!ndi#i!n( #hen *!$!ads )an /e %!'ed #! a diJeen#ph.si)a$ se'e #ha# is n!# )!ns#ained-

5-7 ESTIMATING CAPACITY RE:UIREMENTSSe'es ha'e diJeen# app$i)a#i!n *!$!ad )haa)#eis#i)s /ased "p!n #he #.pe !&app$i)a#i!n and #he p!p"$a#i!n !& "ses *h! e$. "p!n #ha# app$i)a#i!n- App$i)a#i!ns #ha# ae"sed pi%ai$. d"ing /"siness h!"s *i$$ pea d"ing /"siness h!"s- S!%e app$i)a#i!ns pead"ing !J h!"s- E'en /"siness app$i)a#i!ns %a. pea d"ing !J h!"s d"e #! /a)"pp!)essing and %ain#enan)e *ind!*s-

I# is i%p!#an# #! n!#e #ha# #he app$i)a#i!n *!$!ad )an /e )haa)#ei+ed a# 'ai!"s #i%es !&#he da.( *ee( and %!n#h ! $!nge i& #he /"siness ).)$e di)#a#es e-g-( )hanged #! hand$e.eaHend a)#i'i#ies- This #e)hni,"e ens"es #ha# pea and s"s#ainedH$!ad #i%es ae )ap#"edin addi#i!n #! n!%a$ "sage- Se'es sh!"$d /e sa%p$ed a# $eas# !n)e pe h!" !'e a 78Hda.

pei!d #! de'e$!p a *!$!ad p!$e- Using #his #e)hni,"e( a $!ad p!$e *i#h a %ini%"% !&458 sa%p$es )an /e de'e$!ped-



15/23

B. ga#heing in&!%a#i!n #his *a.( an !gani+a#i!n )an )!%/ine *!$!ads #ha# ha'e)!%p$e%en#a. )haa)#eis#i)s- F! ea%p$e( )!%/ining *!$!ad A( *hi)h )!ns"%es 08p!)ess! )apa)i#. d"ing /"siness h!"s and 'e. $i##$e a# nigh#( *i#h *!$!ad B( *hi)h)!ns"%es 08 p!)ess! )apa)i#. d"ing #he nigh# and 'e. $i##$e d"ing /"siness h!"s(de$i'es #he /es# p!ssi/$e es"$#s-

Da#a )en#es a$s! need an es#i%a#e !& #he )apa)i#. e,"ie%en#s &! #h!se *!$!ads #ha# ae/eing )!ns!$ida#ed and?! 'i#"a$i+ed- Thee is a $!# !& dis)"ssi!n a!"nd sa%p$ing- I# has/een s"gges#ed #ha# ea$H#i%e da#a )!$$e)#i!n is %!e 'a$"a/$e #han sa%p$ing !'e #i%e-2!*e'e( #he pi%a. !/Ke)#i'e in #he )!$$e)#i!n p!)ess is #! ga#he s#a#is#i)a$$. e$e'an#da#a *hi$e d!ing n! ha% #! #he se'i)e $e'e$s !& #he app$i)a#i!ns #ha# e$. !n #he se'e #ha#is /eing e'a$"a#ed- The %!e da#a #ha# is )!$$e)#ed and #he %!e !en i# is )!$$e)#ed( #he%!e ha% d!ne /e)a"se i# adds !'ehead #! #he se'e-

Re)a$$ #he sa%p$e da#a )en#e in#!d")ed !n page 6 *i#h 0(888 '!$"%e se'es and a se'ep!p"$a#i!n )a#eg!i+ed as @8 Inn!'a#i!n( 7@ N!%a$ P!d")#i!n( and 0@ Missi!nHCi#i)a$P!d")#i!n- I& #hese 0(888 se'es *ee spead a)!ss #*! da#a )en#es( #hen si p!!$s !&)apa)i#. ea)h da#a )en#e )!n#aining #hee )a#eg!i+ed #.pes !& se'es *i#h si%i$a se'i)e$e'e$ e,"ie%en#s eis#- T! si%p$i&. #his ea%p$e( $e#s ass"%e #hee is K"s# !ne !& #hese da#a)en#es and @88 Inn!'a#i!n se'es- Capa)i#. and "#i$i+a#i!n

Figure ). N'(7('r0"#ie- -e0"(- %"ri"(!e

USING VIRTUALIZATION TO IMPROVE DATA CENTER EFFICIENCY Página 1) de 23


16/23

Figure . N'r0"#ie- r'!e$$'r #'"-

Fig"e < de%!ns#a#es #he s%!!#hing eJe)#- This )ha# is )ea#ed /. n!%a$i+ing #hep!)ess! $!ad /. "sing #he &!%"$a P!)ess! C!"n# 7 P!)ess! Speed P!)ess! U#i$i+a#i!nand #hen adding #!ge#he #his 'a$"e &! a$$ se'es &! ea)h h!" !& #he da.- The #!#a$ de%and'aian)e is %ini%a$- This s%!!#hing eJe)# /e)!%es %!e p!n!"n)ed as #he n"%/e !&se'es in #he g!"p in)eases- On #he !pp!si#e end !& #he spe)#"%( )!%/ining !n$. #*!$!ads #!ge#he *!"$d ha'e a$%!s# n! s%!!#hing eJe)# a# a$$- As )!ns!$ida#i!n a#i!s in)ease(#he s%!!#hing eJe)# is %!e p!n!"n)ed as indi'id"a$ 'aia#i!ns in *!$!ad de%and aea'eaged !"# a)!ss a $age n"%/e !& !'ea$$ *!$!ads-

As %en#i!ned ea$ie( #he es#i%a#ed a'eage se'e p$a)es a 5


17/23

Se'es #ha# ehi/i# "#i$i+a#i!n a/!'e #he n!% )!"$d d!%ina#e #he es!")es in a shaeden'i!n%en#- These se'es *!$!ads sh!"$d /e e'a$"a#ed #! de#e%ine i& #he high "#i$i+a#i!n )an /eed")ed #h!"gh app$i)a#i!n !p#i%i+a#i!n pi! #! adding #he% #! a shaed en'i!n%en#- In#he ea$. s#ages !& )!ns!$ida#i!n and 'i#"a$i+a#i!n( i# is i%p!#an# #! gi'e .!" p!Ke)# #hehighes# p!/a/i$i#. !& s"))ess- This %eans %i#iga#ing an. p!#en#ia$ is- In)$"ding highH"#i$i+a#i!n *!$!ads )e#ain$. %a. /e &easi/$e( /"# i# is n!# *!#h #he is ea$. !n in .!"p!Ke)#-

V'#"&i#e :'r,#'"-S!%e *!$!ads ae 'e. "npedi)#a/$e- 1hen #hese #.pes !& *!$!ads /e)!%e a)#i'e( #he.di'e "p es!")e de%ands and )!"$d aJe)# #he es# !& #he *!$!ads in #he shaeden'i!n%en#- V!$a#i$e *!$!ads epesen# a s%a$$ pe)en#age !& #he #.pi)a$ da#a )en#een'i!n%en# and a$s! sh!"$d /e a'!ided in #he ea$. s#ages !& a )!ns!$ida#i!n?'i#"a$i+a#i!np!Ke)#-

Pri%"!y "(- Se!uri&yS!%e *!$!ads e$. !n e#e%e$. sensi#i'e da#a- A$#h!"gh $!ads in 'i#"a$ se'es aep!#e)#ed &!% a))ess /. !#he $!ads !n #he sa%e ph.si)a$ %a)hine( #he endH"se)!%%"ni#. %a. n!# ini#ia$$. gasp #ha# )!n)ep#- As .!" )!ns!$ida#i!n p!Ke)# de%!ns#a#ess"))ess( i# *i$$ /e)!%e $ess di)"$# #! )!n'in)e end "ses #ha# #hei *!$!ads and #hei

sensi#i'e da#a *i$$ /e p!#e)#ed-

Regu#"&'ry Thee ae se'es #ha# %a. /e eg"$a#ed /. a g!'en%en# agen). d"e #! #he #.pes !&app$i)a#i!ns #ha# #hese'e s"pp!#s- F! ea%p$e( i& #he se'e is "sed #! %anage a p!d")#i!n $ine &! &!!d !ind"s#ia$ gases( .!" %a. need pe%issi!n &!% a eg"$a#!. agen). /e&!e /eing a$$!*ed #!)!ns!$ida#e ! 'i#"a$i+e #his *!$!ad-

+u$i(e$$ Se($i&i%i&yI& .!" ae in #he ea$. s#ages !& a )!ns!$ida#i!n?'i#"a$i+a#i!n p!Ke)#( .!" in#ena$ "ses *i$$n!# /e &a%i$ia *i#h #he #e)hn!$!g.- A# #his p!in#( i# is "n$ie$. #ha# .!" "ses *i$$ a$$!* .!" #!

'i#"a$i+e %issi!nH)i#i)a$ app$i)a#i!ns- E'en i& #he. d!( .!" sh!"$d *ai# #! %!'e #h!se*!$!ads "n#i$ .!" ha'e gained epeien)e *i#h #he ne* a)hi#e)#"e- On)e #hese )i#eiaae app$ied( .!" %a. /e $e *i#h a se# !& se'es #ha# *i$$ n!# /e pa# !& #he)!ns!$ida#i!n?'i#"a$i+a#i!n )a#eg!i+a#i!n p$an as des)i/ed a/!'e-

Ogani+a#i!ns "s"a$$. #. #! eep #he #!#a$ )!s# !& !*neship TCO &! #he Inn!'a#i!nen'i!n%en# as $!* as p!ssi/$e( in)$"ding #he need #! in)!p!a#e p!*e )!ns"%p#i!n )!s#sin #he TCO- U#i$i+a#i!n !/Ke)#i'es and )!ns!$ida#i!n a#i!s &! #his se'e p!!$ #.pi)a$$. *i$$ /e%")h highe #han &! #he P!d")#i!n ! Missi!nHCi#i)a$ p!!$s-

Ogani+a#i!ns %a. p$a)e es#i)#i!ns !n *hi)h *!$!ads )an )!eis# *i#h *hi)h *i#h egad#! spe)i) se'es #ha# ha'e pi'a).( se)"i#.( ! eg"$a#!. )!n)ens- These es#i)#i!ns %a.

$i%i# #he )!ns!$ida#i!n a#i!s &! g!"ps )!n#aining #h!se se'es-

On)e .!" ha'e g!"ped a$$ !& .!" se'es in#! #he app!pia#e )a#eg!ies and s"/H)a#eg!ies( .!" *i$$ need #! assign "#i$i+a#i!n !/Ke)#i'es- 1hi$e .!" %a. se$e)# "#i$i+a#i!n#age#s a# ! a/!'e @8 &! #he Inn!'a#i!n p!!$( .!" %a. !n$. &ee$ )!%&!#a/$e *i#h a ange!& 5@ #! @8 &! #he P!d")#i!n p!!$- Y!" )!ns!$ida#i!n a#i! *i$$ /e di'en /. #he "#i$i+a#i!npe)en#ages &! n!# K"s# p!)ess!s /"# &! #he !#he )!%p!nen#s as *e$$-A# #he end !& #he ee)ise( .!" *i$$ /e a/$e #! iden#i&. .!" /es# !pp!#"ni#. &! sa'ings(*hi)h *i$$ %!s# $ie$. /e in #he Inn!'a#i!n aea- The Inn!'a#i!n en'i!n%en# n!%a$$. has #he%!s# se'es( #he $!*es# "#i$i+a#i!n( and #he highes# #!$ean)e &! e!- As da#a )en#es )!s#sise egading eneg. )!ns"%p#i!n and a'ai$a/i$i#. !& eneg.( #he n"%/es !& 'i#"a$i+edse'es %a. in)ease #! a$$!* %!e p!)essing a# $!*e $e'e$s !& eneg. )!ns"%p#i!n-

In s"%%a.( .!" n!# !n$. need #! )haa)#ei+e #he *!$!ads #ha# .!" ae p$anning !n)!ns!$ida#ing( /"# .!" a$s! %"s# )haa)#ei+e #he #age# en'i!n%en# in#! *hi)h .!" ae



18/23

sending #h!se *!$!ads- Y!" need #! de#e%ine h!* /"s. i# sh!"$d /e( h!* %")h i# *i$$ )!s#(*ha# #.pe !& #e)hn!$!g. i# sh!"$d ha'e in !de #! a)hie'e #he se'i)e $e'e$s e,"ied ! %ee#se)"i#.?pi'a). !/Ke)#i'es( and s! !n- A$s!( )an .!" da#a )en#e in&as#")#"e hand$e #hein)eased p!*e and )!!$ing densi#ies #ha# 'i#"a$i+a#i!n p$a)es "p!n #he% d"e #! #hein)eases in ea)h se'es "#i$i+a#i!n and a))!%pan.ing p!*e )!ns"%p#i!n Y!" a$s! need#! )!nside #ha# i& a sing$e se'e &ai$s n!*( %an. %!e app$i)a#i!ns *i$$ /e aJe)#ed-



19/23

7- OT2ER CONSIDERATIONS

7-0 METRICS AND MEASUREMENTS

Ogani+a#i!ns )!%%!n$. "se p!)ess! "#i$i+a#i!n as a %eas"e%en# &! s"))ess( *i#h @"#i$i+a#i!n )!nsideed #! /e ine)ien# p!!( 5@ #! /e /e##e( @8 #! /e g!!d( 4@ #! /e'e. g!!d( and 088 #! /e /es#- 2!*e'e( #his )an /e %is$eading /e)a"se #hese ae)!p!a#eH*ide a'eages- S!%e pe)en#age !& se'es *i$$ n!# /e )andida#es &!'i#"a$i+a#i!n- These n!nH'i#"a$i+ed se'es ae s#i$$ pa# !& #he !'ea$$ )!%p"#a#i!n &!)!p!a#eH*ide se'e "#i$i+a#i!n-

N!nH'i#"a$i+ed se'es %a. ha'e epesen#ed 0@ !& #he ph.si)a$ se'e p!p"$a#i!n pi! #!#he 'i#"a$i+a#i!n p!Ke)#- P!s#H'i#"a$i+a#i!n( #hese sa%e se'es %a. epesen# =@ !& #hese'e p!p"$a#i!n-F! ea%p$e( )!nside #he da#a )en#e *i#h 0(888 se'es- 1i#h #.pi)a$ )!ns!$ida#i!n a#i!s !&08Q0( i# is eas!na/$e #! ass"%e #ha# =@8 ph.si)a$ se'es *i$$ /e 'i#"a$i+ed and )!ns!$ida#ed#! =@ ph.si)a$ se'es "nning a# @8 "#i$i+a#i!n( *i#h #he !#he 0@8 n!nH'i#"a$i+ed se'es"nning a# @ "#i$i+a#i!n- I& .!" deni#i!n !& s"))ess is #! a)hie'e @8 p!)ess! "#i$i+a#i!n(i# *!"$d n!# ha'e %e# .!" !/Ke)#i'e( e'en #h!"gh .!" ha'e a)hie'ed signi)an# )!s#ed")#i!ns- Y!" *!"$d /e $e *i#h 57@ ph.si)a$ se'es *i#h an a'eage "#i$i+a#i!n !& 50 =@se'es @8 "#i$i+a#i!n and 0@8 @ "#i$i+a#i!n-

Addi#i!na$ %e#i)s and %eas"e%en#s #! )!nside in)$"deQ• Red")#i!n in eneg. )!ns"%p#i!n

• Red")#i!n in se'e )!"n#• Red")#i!n in peiphea$ )!%p!nen#s• Red")#i!n in !! spa)e• Red")#i!n in )!!$ing e,"ie%en#s• Red")#i!n in /"siness se'i)e de$i'e.

7-5 ESTABLIS2 SERVICE LEVEL OB>ECTIVES

Se'i)e $e'e$ !/Ke)#i'es ae a e. )!nsidea#i!n &! )!ns!$ida#i!n- These !/Ke)#i'es aediJeen# *i#hin ea)h !& #he Inn!'a#i!n( P!d")#i!n( and Missi!nHCi#i)a$ *!$!aden'i!n%en#s-

Missi!nHCi#i)a$ app$i)a#i!n *!$!ads de%and s#a/$e en'i!n%en#s and a high se'i)e $e'e$(*hi$e Inn!'a#i!n en'i!n%en#s )hange )!ns#an#$.- Ag"a/$.( #he n"%/e !ne )a"se !&app$i)a#i!n !"#ages is )hange-C!%/ining Missi!nHCi#i)a$ and Inn!'a#i!n *!$!ads p$a)es addi#i!na$ iss !n Missi!nH)i#i)a$#ass and is n!# e)!%%ended- This is *h. i# is s! i%p!#an# #ha# .!" nd and $a/e$ a$$ #heMissi!nHCi#i)a$( P!d")#i!n( and Inn!'a#i!n se'es in .!" da#a )en#e and #hen es#a/$ishse'i)e $e'e$ !/Ke)#i'es &! ea)h and e'e. !ne- The Inn!'a#i!n en'i!n%en# sh!"$d ha'e #he $!*es# TCO( #he highes# a#e !& )hange( and #he%!s# '!$a#i$i#.- The P!d")#i!n en'i!n%en# sh!"$d ha'e a s#ead. "#i$i+a#i!n a#e- Fa"$# #!$ean)e is i%p!#an#hee /e)a"se #hese app$i)a#i!ns s"pp!# #he da.H#!Hda. !pea#i!ns !& #he )!%pan.- The $!ss!& a Missi!nHCi#i)a$ app$i)a#i!n *!$!ad has an i%pa)# !n an !gani+a#i!ns nan)ia$ hea$#hand?! )"s#!%es e'e. se)!nd #ha# #he app$i)a#i!n is "na'ai$a/$e ! n!# pe&!%ing a#epe)#ed $e'e$s-

Se'i)e $e'e$ !/Ke)#i'es di'e had*ae p")hasing de)isi!ns( ed"ndan). in )!ng"a#i!n(#h!"ghp"# e,"ie%en#s( disas#e e)!'e. p$an DRP and /"siness )!n#in"i#. p!ga%BCP !/Ke)#i'es( and %")h %!e- On)e #he se'i)e $e'e$ !/Ke)#i'es ha'e /een es#a/$ishedand #he dedi)a#ed had*aes %e%!.( CPUs( e#)- ae n!*n( i# is p!ssi/$e #! pedi)# h!*%")h #! spend !n ea)h !& #he #hee en'i!n%en#s- T! d! s!( s"%%ai+e #he #!#a$ )apa)i#.e,"ie%en#s &! ea)h en'i!n%en# and es#a/$ish a /ase$ine )!s# &! ea)h #.pe !& )apa)i#.-



20/23

7-7 PRIORITIZATION?P2ASES

A )!ns!$ida#i!n?'i#"a$i+a#i!n p!Ke)# p$an %"s# /e )!ns#")#ed in a *a. #ha# $i%i#s is in #heea$. phases .e# ea$i+es signi)an# p!gess #!*ad #he !/Ke)#i'es( %e#i)s( and%eas"e%en#s as #he !gani+a#i!n gains )!ns!$ida#i!n epeien)e-

The ini#ia$ s#ages !& #he p$an sh!"$d in)$"de se'es *i#h *!$!ads #ha# ha'e $!* se'i)e$e'e$ !/Ke)#i'es and high p!#en#ia$ )!ns!$ida#i!n a#i!s- As des)i/ed ea$ie( #he &!$$!*ings#eps sh!"$d /e #aenQ

• Ran se'es /. #.pe !& *!$!ad• Ran se'es *i#hin ea)h #.pe !& *!$!ad /. p!)ess! "#i$i+a#i!n• Ea%ine #he se'i)e $e'e$s es#a/$ished &! ea)h app$i)a#i!n *!$!ad

A$#h!"gh i# is p!ssi/$e #! )!%/ine *!$!ads #ha# ha'e 'ai!"s se'i)e $e'e$ !/Ke)#i'es( a'!idd!ing s! d"ing #he ea$. s#ages-

The !/Ke)#i'e !& phase 0 !& #he p!Ke)# is #! ge# high )!ns!$ida#i!n a#i!s( %ee# se'i)e $e'e$!/Ke)#i'es( and i%p$e%en# a p!)ess #ha# p!%!#es %anagea/i$i#. !& #he en'i!n%en#-

2igh )!ns!$ida#i!n a#i!s de%!ns#a#e ed")ed TCO as *e$$ as ed")#i!ns in !! spa)e()!!$ing e,"ie%en#s( and eneg. )!ns"%p#i!n- An!#he i%p!#an# aspe)# !& #he Inn!'a#i!nen'i!n%en# is #he a#e !& )hange- The se'e )!ng"a#i!ns( s!*ae( and da#a &!Inn!'a#i!n *!$!ads )hange !n a eg"$a /asis-B"siness se'i)es )an /e a))e$ea#ed /. a$$!*ing #he "se )!%%"ni#. #! a$$!)a#e and%anage )apa)i#. !n de%and as *e$$ as #! )ea#e /a)"p s#a#egies and 'esi!ns !& #heiapp$i)a#i!n en'i!n%en#s !n de%and-P!d")#i!n se'es ha'e %!e pedi)#a/$e "#i$i+a#i!n pa##ens- P!d")#i!n en'i!n%en# "sesgenea$$. ae n!# a$$!*ed #! %ae )hanges *i#h!"# g!ing #h!"gh a )hange %anage%en#p!)ess( and se'i)e $e'e$ !/Ke)#i'es #.pi)a$$. ae *e$$ "ndes#!!d- This %eans #ha# #he TCO&! #his #.pe !& en'i!n%en# is highe- Fa"$# #!$ean)e( /a)"p p$ans( and disas#e e)!'e.p$ans ae e. &a)#!s in designing #he en'i!n%en# #! h!"se P!d")#i!n *!$!ads-

The P!d")#i!n en'i!n%en#s #.pi)a$ )!ns!$ida#i!n a#i! %a. /e $!*e #han #ha# !& #he

Inn!'a#i!n en'i!n%en# in !de #! a))!%%!da#e ne)essa. head!!% &! P!d")#i!n se'i)e$e'e$s- Thee&!e( TCO %a. need #! /e adK"s#ed &! #he P!d")#i!n en'i!n%en#- Y!" a$s! %a./e )h!!sing %!e ad'an)ed #e)hn!$!g. &! #he h!s# )!%p!nen#s #! ens"e highe #h!"ghp"#and /e##e se'i)e $e'e$s-

S!%e *!$!ads ae di)"$# #! iden#i&. /e)a"se .!" ae #.ing #! de$inea#e /e#*een Missi!nHCi#i)a$ P!d")#i!n and N!%a$ P!d")#i!n se'es- B!#h #.pes !& )a#eg!ies %a. ha'e #hesa%e na%ing )!n'en#i!n( s! #he ini#ia$ &!)"s *i$$ /e !n es!")e "#i$i+a#i!n pa##ens- The)haa)#eis#i)s !& Missi!nHCi#i)a$ se'es in)$"de "$#aHhigh #ansa)#i!n a#es( $ageda#a/ases( high I?O )!"n#s( high ne#*! pa)e# )!"n#s( #!p p!)ess! pe)en#i$es( high%e%!. )!ns"%p#i!n( and s! !n-

1hen #.ing #! de#e%ine *hi)h se'es #! )!ns!$ida#e in phase 5 and *hi)h in phase 7( i#%igh# /e easie #! p"# se'e *!$!ads *i#h #he &!$$!*ing )haa)#eis#i)s in#! phase 7Q

• Se'es *i#h high$. '!$a#i$e "#i$i+a#i!n pa##ens• Se'es e,"iing %!e #han 3 GB !& RAM• Se'es *i#h "#i$i+a#i!n !& %!e #han 58 !& #he #age# p!)ess! )apa/i$i#.• Se'es *i#h I?O a#es gea#e #han 08(888 I?O pe se)!nd• Se'es *i#h ne#*! /.#es pe se)!nd !& gea#e #han @(888(888

I& .!" en'i!n%en# is $ie #ha# !& %!s# !#he !gani+a#i!ns( .!" *i$$ ha'e p"# app!i%a#e$.08 #! 0@ !& .!" #!#a$ in&as#")#"e in#! phase 7-



21/23



22/23

7-3 TEC2NOLOGY CONSIDERATIONS

C!ns!$ida#i!n a#i!( se'i)e $e'e$s( and p!Ke)#ed g!*#h ae a$$ e. &a)#!s in de#e%ining*ha# #e)hn!$!g.#! "se #! h!s# a 'i#"a$ en'i!n%en#- Y!" n!* n!* #ha# #he #.pi)a$ se'e "ns a# ! /e$!*@ "#i$i+a#i!n !& p!)ess! es!")es( /"# .!" a$s! sh!"$d n!* #ha# #he #.pi)a$ '!$"%ese'e "#i$i+es $ess #han 0 !& #he #h!"ghp"# )apa/i$i#. !& /!#h #he dis and ne#*!)!%p!nen#s !& #he se'e- Me%!. is #he !ne es!")e #ha# is )!ns"%ed a# a %!eeas!na/$e


23/23

• UPS #ha# )!'es IT &! $!nge pei!ds !& #i%e• Ba)"p genea#!s #ha# )!'e IT &! $!nge pei!ds !& #i%e• Se'i)e $e'e$ i%p!'e%en#

3- CONCLUSION

Vi#"a$i+a#i!n is a %a#"e #e)hn!$!g. #ha# *!s *e$$ and is hee #! s#a.- I# sa'es eneg. and%!ne. in .!" "#i$i#. /i$$( in)eases )!%p"#ing #h!"ghp"#( &ees "p !! spa)e( and&a)i$i#a#es $!ad %iga#i!n and disas#e e)!'e.- The 'i#"a$i+a#i!n sa'ings en#i#$e%en# )an /e

%"$#ip$ied /. "pgading #he p!*e and )!!$ing in&as#")#"e #! "n e)ien#$. *hen IT$!ading is s"/s#an#ia$$. ed")ed d"e #! )!ns!$ida#i!n and 'i#"a$i+a#i!n-

L!!ing &!*ad( #he #hee %aK! )ha$$enges #ha# 'i#"a$i+a#i!n p!ses #! ph.si)a$in&as#")#"e ae d.na%i) high densi#.( "ndeH$!ading !& p!*e?)!!$ing s.s#e%s( and #heneed &! ea$H#i%e( a)H$e'e$ %anage%en#- These )ha$$enges )an /e %e# /. !*H/ased )!!$ing( s)a$a/$e p!*e and )!!$ing( andpedi)#i'e %anage%en# #!!$s- A$$ #hee !& #hese s!$"#i!ns ae /ased !n design pin)ip$es #ha#si%"$#ane!"s$. es!$'e &"n)#i!na$ )ha$$enges and in)ease e)ien).-

I# is essen#ia$ in a 'i#"a$i+ed en'i!n%en# #! %anage #he da#a )en#e as a h!$is#i) s.s#e%)!%pised !& /!#h IT and ph.si)a$ in&as#")#"e )!%p!nen#s- Be)a"se 'i#"a$i+a#i!ngenea$$. es"$#s in p!*e sa'ings( i# )an aJe)# h!* da#a )en#es ae p!*eed and )!!$ed-Undes#anding #he i%pa)# !& 'i#"a$i+a#i!n !n ph.si)a$ in&as#")#"e is #he e. #! %apping!"# a s!"nd s#a#eg.-

virtualization to improve data center efficiency

Documents