Hi, > > > > > I'm not sure the modern SATA disk can detect such failure. > > > > > > > > I think the modern SATA disk has this feature while the IDE disk doesn't > > > > have. > > > > > > Do you have any pointer? > > > > This may help you: > > http://www.seagate.com/content/pdf/whitepaper/SerialATA_comparison_UATA_Technology.pdf > > It says serial ATA adds 32-bit CRC error correction for all bits transmitted, > > as opposed to only data packets in Ultra ATA. > > And it is known that each sector of modern disks has extra bits for ECCs to > > correct errors. > > Hmm, this isn't same as what SCSI DIF (and enterprise storage) does to > prevent silient data corruption. This handles only transmission > corruption. So there is still a good chance that silient data > corruption could happen. > > SCSI DIF and enterprise storage maintain extra bytes per sector for > checksumming to prevent silient data corruption. I guess SCSI DIF is a feature which adds extra bytes to each sector and its protocol allows software to control them. I think each sector has another extra field which SCSI or SATA drives internally use to correct errors. > > I think you can find the details in the specification of serial ATA if you > > have a right to access it. > > I heard that SATA committee considered to add something like SCSI DIF > to SATA spec last year. I'm not sure if it was accepted. > -- -- To unsubscribe from this list: send the line "unsubscribe stgt" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
