To sequence we used about ~100x synthetic coverage on average and ~1000x sequencing coverage; so that's a whole lot of coverage. even then we did have 10 bit errors, but all the data blocks were recovered
I'm sorry, can you clarify what that means? You wrote each piece of data 100 times? what does the 1000 refer to?
we printed the dna microarray using agilent's ink jet process (agilent is a spin off of hp; imagine an inkjet with actg instead of cmyk). each spot on the array has many hundreds of thousands of molecules. after we cleave the dna off the array, we take a portion of that, amplify and the sequence it. the portion we took off we estimate ~100 molecules for every oligo we made (55,000). we the sequence to get >55 million reads (so 1000x coverage); but these are just averages, and the distribution varies. you can check out the supplement of the paper if you are interested.