On Dec 14, 2007 1:12 AM, can you guess? <[EMAIL PROTECTED]> wrote: > > yes. far rarer and yet home users still see them. > > I'd need to see evidence of that for current hardware. What would constitute "evidence"? Do anecdotal tales from home users qualify? I have two disks (and one controller!) that generate several checksum errors per day each. I've also seen intermittent checksum fails that go away once all the cables are wiggled.
> Unlikely, since transfers over those connections have been protected by > 32-bit CRCs since ATA busses went to 33 or 66 MB/sec. (SATA has even stronger > protection) The ATA/7 spec specifies a 32-bit CRC (older ones used a 16-bit CRC) [1]. The serial ata protocol also specifies 32-bit CRCs beneath 8/10b coding (1.0a p. 159)[2]. That's not much stronger at all. Will [1] http://www.t10.org/t13/project/d1532v3r4a-ATA-ATAPI-7.pdf [2] http://www.ece.umd.edu/courses/enee759h.S2003/references/serialata10a.pdf _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
