Adding components



Recall: Pf(A) and Pf(B) » Pf(A) + Pf(B)
MTTF = 58 ´ Pf(machine) » MTTF 13.65 hr.
Clustered systems will be highly UNavailable! Has any cluster project really dealt with this? - definate problem with the Berkeley NOW cluster! - local 10% rule: 10% of the cluster is always unavailable

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