Hello Bernd,
 Now i see your point... ;-)
 Well, following a "very simple" math:

 - One txg each 5 seconds = 17280/day;
 - Each txg writing 1MB (L0-L3) = 17GB/day
 
 In the paper the math was 10 years = ( 2.7 * the size of the USB drive) writes 
per day, right? 
 So, in a 4GB drive, would be ~10GB/day. Then, just the labels update would 
make our USB drive live for 5 years... and if each txg update 5MB of data, our 
drive would live for just a year.
 Help, i'm not good with numbers... ;-)

 Leal
[http://www.eall.com.br/blog]
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