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availability of a system is the probability that the sys availability of a system is the probability that the sys

availability of a system is the probability that the sys - PDF document

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availability of a system is the probability that the sys - PPT Presentation

availability of a system is the probability that the sysavailability of a system is the probability that the sysavailability of a system is the probability that the sysavailability of a system is the ID: 860165

availability time sys probability time availability probability sys system c1234failover whichpb1 crashedhas recei primary service

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Presentation Transcript

1 availability of a system
availability of a system

2 is the probability that
is the probability that

3 the sys availability of
the sys availability of

4 a system is the probabi
a system is the probabi

5 lity that the sys availa
lity that the sys availa

6 bility of a system is th
bility of a system is th

7 e probability that the s
e probability that the s

8 ys availability of a sys
ys availability of a sys

9 tem is the probability t
tem is the probability t

10 hat the sys availability
hat the sys availability

11 of a system is the prob
of a system is the prob

12 ability that the sys fai
ability that the sys fai

13 lover time of a primary-
lover time of a primary-

14 backup service is the lo
backup service is the lo

15 ngest time the service c
ngest time the service c

16 an be without a pr p2!c1
an be without a pr p2!c1

17 234Failover: Time during
234Failover: Time during

18 whichPB1: has not crash
whichPB1: has not crash

19 edhas not recei p2!"c123
edhas not recei p2!"c123

20 4Failover: Time during w
4Failover: Time during w

21 hichPB1: has not crashed
hichPB1: has not crashed

22 has not recei p2!"!c1234
has not recei p2!"!c1234

23 Failover: Time during wh
Failover: Time during wh

24 ichPB1: has not crashedh
ichPB1: has not crashedh

25 as not recei p2"!"!c1234
as not recei p2"!"!c1234

26 Failover: Time during wh
Failover: Time during wh

27 ichPB1: has not crashedh
ichPB1: has not crashedh

28 as not recei p2"!"!c1234
as not recei p2"!"!c1234

29 Failover: Time during wh
Failover: Time during wh

30 ichPB1: has not crashedh
ichPB1: has not crashedh

31 as not recei c1234¥ k =
as not recei c1234¥ k =

32 1 (since at most one cr
1 (since at most one cr

33 a Ð may not become
a Ð may not become

34 the new primary !until
the new primary !until

35 Ð client may not lear
Ð client may not lear