Comment Re:Funny math or multiple systems? (Score 3, Insightful) 211
4,677 hours of failure in 4,344 hours of time means that at any given time, an average of 1.07 locations were offline.
There are 131 DMV offices in Virignia; I don't know how many other Department of Transportation locations are included in the same bucket. If we assume that it's *only* the 131 DMV offices, 1.07 failures at any given time means that the system means that 130.3 locations are working, meaning that this statewide patchwork of network connections is 99.45% reliable.
If your 'redundant' connections cut the failures in half (which they wouldn't), you'd have 99.59% reliability at more than twice the cost for the network.
Adding 'redundancy' would more than double the network cost (since presumably currently they're using the lowest bidder), and in most places it wouldn't add any real redundancy anyway. Getting actual network redundancy is *fiendishly* difficult, even when you're spending a lot of money and siting a facility in a place that's well-served for networking. In small-town Virginia, you're almost certainly going to wind up paying for having redundant wires hanging on the same poles.