View Single Post
  #3  
Old June 14th 18, 11:35 AM posted to alt.comp.os.windows-10,alt.windows7.general,alt.comp.os.windows-8
mechanic
external usenet poster
 
Posts: 1,064
Default External hard drive advice please

On Thu, 14 Jun 2018 08:39:54 -0000 (UTC), Chris wrote:

It's not quite right. The probability of three independent disks
all failing at the same is the cube of the individual
probability: P(A)^3


Yes, that's what I had in mind - although the assumption of
independence must be questionable, that's what did for Three Mile
Island, as the enquiry revealed (if I'm remembering correctly).
Ads