Edward Ned Harvey (blu) wrote: > Truth is: Hardware mirroring doesn't provide data integrity. But
Hardware mirroring = redundant disks, and you just said that I was incorrect that "redundant disks do not provide data integrity." No, the fact is that redundant disks DON'T protect your data. Write holes. Parity corruption. Rebuild errors. Cache inconsistency. These can eat your data without warning, without notification, all while the hardware keeps going even after hardware faults. > software mirroring with btrfs/zfs do indeed provide data integrity. This isn't the hardware that provides for data integrity. It's the checksum trees that ensure integrity and replicated data that provides for accurate rebuild. This is orthogonal to redundant hardware. You can do this with a single device: data integrity without redundant hardware. -- Rich P. _______________________________________________ Discuss mailing list [email protected] http://lists.blu.org/mailman/listinfo/discuss
