Jeffrey B. Layton wrote: [...]
"The probability of the disk failing to read back data is the same as it was long ago, so today you can expect at least one failed read every 10TB to 100TB. But the reconstruction of a failed 500GB disk in an 11-disk array has to read 5TB, so there can be an unacceptably large chance of failure to rebuild every one of the 1 billion sectors on the failed disk."
It gets worse. At some point in capacity, you can no longer assume all disks are operational all the time, reading in an non-error state. Unfortunately for us, this capacity is (as Garth and others have pointed out) really close by. Well within an order of magnitude of the capacity of a single drive. This means it is well within the capacity of a standard RAID.
-- Joseph Landman, Ph.D Founder and CEO Scalable Informatics LLC, email: [EMAIL PROTECTED] web : http://www.scalableinformatics.com http://jackrabbit.scalableinformatics.com phone: +1 734 786 8423 fax : +1 866 888 3112 cell : +1 734 612 4615 _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
