On 1/19/2013 1:43 AM, Mikael Abrahamsson wrote: > With a BER of 10^-14 you have a 16% risk of getting URE when reading an > entire 2TB drive. On 1/19/2013 7:21 AM, Roy Sigurd Karlsbakk wrote: > ok, perhaps, maybe, but then it's 17% chance of losing data after a > mirror or raid-5 rebuild with 2TB drives... Where are you guys coming up with this 16-17% chance of URE on any single full read of this 2TB, 10E14 drive? The URE rate here is 1 bit for every 12.5 trillion bytes. Thus, statistically, one must read this drive more than 6 times to encounter a URE. Given that, how is any single full read between the 1st and the 6th going to have a 16-17% chance of encountering a URE for that one full read? That doesn't make sense. -- Stan -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
