7/30/2019 Fault-Tolerant Systems Introduction | - 2

1/63

;

Ghogjjgj R|zgh Jglcm42(97;

Ikwnz(Zengrkmz R|zgh

7/30/2019 Fault-Tolerant Systems Introduction | - 2

2/63

?

Zdg Rlmcng Rzwba Ikwnz Hejgn

Zdg lmcng zwba ikwnz $RRI, hejgn l kne

rgigrrgj ze k zdg bnklbkner zkmjkrjikwnzhejgn

RRI kzzrlowzg6

Lz rgprggmz hkm| jliigrgmz pd|lbkn ikwnz Lz l lmjgpgmjgmz ei zgbdmenec|. k zdg bembgpz ei k lcmkn nlmg

oglmc zwba kz k neclb yknwg bkm og kppnlgj ze km| zrwbzwrknhejgn

Gtpgrlgmbg dk desm zdkz zgz zdkz jgzgbz RRI jgzgbz

hkm| membnklbkn ikwnz k sgnn

Behpkrgj ze ezdgr ikwnz hejgn. zdg mwhogr ei RRI lm kblrbwlz l hknn

7/30/2019 Fault-Tolerant Systems Introduction | - 2

3/63

7/30/2019 Fault-Tolerant Systems Introduction | - 2

4/63

:

Zdg Hwnzlpng Rzwba Ikwnz Hejgn

Zdg hwnzlpng zwba ikwnz $HRI, hejgn l k zrklcdzierskrj gtzgmlem ei zdg RRI hejgn lm sdlbdgygrkn nlmg bkm og lhwnzkmgewn| zwba

Li sg jgmezg o| mzdg mwhogr ei pelong RRI

lzg. kmj kwhg zdkz zdg hwnzlpnlblz| ei k ikwnz. l-g-zdg mwhogr ei nlmg lhwnzkmgewn| zwba. l mecrgkzgr zdgm k bemzkmz a. zdgm zdg mwhogr eipelong HRI l6

la

l l

m?

;

8

7/30/2019 Fault-Tolerant Systems Introduction | - 2

5/63

7

Zdg Hwnzlpng Rzwba Ikwnz Hejgn

Zdl l wwknn| zee nkrcg k mwhogr ze knnes w ze jgkngtpnlblzn| slzd knn hwnzlpng ikwnz-

Sd| je sg mggj ze bemljgr HRI knzecgzdgr5

Rlmbg k hwnzlpng ikwnz Il fwz k gz qi;.i?..iax ei k lmcng

ikwnzil. sd| lmz Ijgzgbzgj o| zdg zgz zdkz jgzgbz zdglmcng ikwnzil5

Zdg gtpnkmkzlem l preyljgj o| zdg hkalmc rgnkzlemkhemc ikwnz

Jgilmlzlem6 Ngz Zc og zdg gz ei knn zgz zdkz jgzgbz k ikwnzc- Sg k| zdkz k ikwnziiwmbzlemknn| hka zdg ikwnz c liizdg hwnzlpng ikwnz qi.cx l mez jgzgbzgj o| km| zgz lm Zc

7/30/2019 Fault-Tolerant Systems Introduction | - 2

6/63

9

Zdg Hwnzlpng Rzwba Ikwnz Hejgn

Gtkhpng6 Lm zdg ienneslmc blrbwlz zdg zgz 0;; l zdg emn| zgz zdkzjgzgbz zdg ikwnz b (k(0- Zdg khg zgz jeg mez jgzgbz zdg hwnzlpngikwnz qb (k(0. k (k(;x- Zdw k (k(; hka b (k(0

Hkalmc bkm kne og jgilmgj slzd rgpgbz ze k zgz gz Z

Jgilmlzlem6 Ngz ZcZog zdg gz ei knn zgz zdkz jgzgbz k ikwnz c-Sg k| zdkz k ikwnzihka zdg ikwnz cwmjgr k zgz gzZlii zdg

hwnzlpng ikwnz qi.cx l mez jgzgbzgj o| km| zgz lm Zc Iwmbzlemkn hkalmc lhpnlg hkalmc wmjgr km| zgz gz. owz zdg

bemygrg zkzghgmz l mez knsk| zrwg

o

b

k0

; ;;

0;

7/30/2019 Fault-Tolerant Systems Introduction | - 2

7/63

3

Zdg Hwnzlpng Rzwba Ikwnz Hejgn

Li i hka c. zdgm zdg ikwnz qi.cx l mez jgzgbzgj o|

zdg zgz zdkz jgzgbz c knemg- Owz qi.cx hk| ogjgzgbzgj o| ezdgr zgz- Zdl l zdg bkg slzd zdg

blrbwlz ireh zdg prgylew nljg. sdgrg zdg ikwnz qb

(k(0. k (k(;x l jgzgbzgj o| zdg zgz 0;0 Km lhperzkmz preongh6 clygm k behpngzg zgz Zier

lmcng ikwnz. bkm zdgrg gtlz k hwnzlpng ikwnz I8

qi;. i?..iax wbd zdkz Il mez jgzgbzgj o| Z5

$_ghghogr zdkz Zjgzgbz gygr|il knemg,-

7/30/2019 Fault-Tolerant Systems Introduction | - 2

8/63

4

Zdg Hwnzlpng Rzwba Ikwnz Hejgn Gtkhpng6 Zdg zgz gz Z8 q;;;;. 0;;;. ;;;0. ;00;. ;0;0.

0;0;x jgzgbz gygr| RRI lm zdg ienneslmc blrbwlz

NgziogO (k(; kmj c og B (k(;- Zdg emn| zgz lm Zzdkzjgzgbz zdg lmcng ikwnzikmj c l ;00;- Desgygr. zdg hwnzlpngikwnz qi.cx l mez jgzgbzgj wmjgr zdg zgz ;00;.ihka c kmj c

hkai

Zdg gtkhpng jghemzrkzg blrbwnkr hkalmc rgnkzlem wmjgr Zkhemc zdg behpemgmz eiI

;

B

;

00%;

0%;

0%;

O

K

;

0%;

J

;%0

;%0

;

7/30/2019 Fault-Tolerant Systems Introduction | - 2

9/63