Hello Peter, Thank you for the answer.
> > Yes. But most wont and it will hur quite a lot performance wise. I know, for > example, that our IBM DS4700 with updated firmware can > enable "verify-on-read". Is it easily possible to switch this feature on and off? E.g., one does a a test from time to time but for the every day usage one avoids "verify-on-read"? > Remember that you have to calculate this against the amount of corrupt data, > not the total amount of data. My hope is that corrupted data will be repaired by the RAID controller. The chance to loose the data on a RAID6 system is of the third order should be very small. My guess it that the silent corruption rate is higher if the RAID system does not have the "verify-on-read" feature. I try to get the numbers. I assume in this calculation that no bit flips occur on the buses or the controller which is already sort of naive. Thank you. Cheers, Henning _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
