A Terabyte In A Cigar Box
Anonymous Howard writes "LaCie has introduced a 1 Terabyte (capacity) disk for (get this) only $1,199.00!(USD) It is external and equipped with FireWire 800, FireWire 400, iLink/DV, Hi-Speed USB 2.0 or USB 1.1 to connect to both PC and Mac. Take a look here."
Surely you mean 5 LoCs in a cigar box? ...
that'd be about 500 deciLoCs per cigar I reckon
"A door is what a dog is perpetually on the wrong side of" - Ogden Nash
I bet a lot of normal users will be archving HD video pretty shortly. I'm doing it right now, and at 8.9GB/hr, having terrabytes to work with would be pretty handy.
Plus, people could now rip their entire CD collection and not need to use any compression at all, and with enough albums, terrabytes could be useful.
Draw yourself out a probability tree and you'll see where you're going wrong.
In this case the similiest thing to do is work out the probability that none of the drives fail. You gave 95% or 0.95. So, two drives is 0.95 * 0.95. Three drives is 0.95 * 0.95 * 0.95. And so on. So eight drives is 0.95 to the power of 8, which is 0.663, or 66.3%. So the probability of any drive failing is 1-0.663, or 33.7%.
-- Sorry, I can't think of anything funny to say here.