Gary Mills wrote:
On Sun, Jan 15, 2012 at 04:06:33PM +0000, Peter Tribble wrote:
On Sun, Jan 15, 2012 at 3:04 PM, Jim Klimov <jimkli...@cos.ru> wrote:
"Does raidzN actually protect against bitrot?"
That's a kind of radical, possibly offensive, question formula
that I have lately.
Yup, it does. That's why many of us use it.
There's actually no such thing as bitrot on a disk. Each sector on
the disk is accompanied by a CRC that's verified by the disk
controller on each read. It will either return correct data or report
an unreadable sector. There's nothing inbetween.
Actually, there are a number of disk firmware and cache faults
inbetween, which zfs has picked up over the years.
--
Andrew Gabriel
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