Hello, > > > > > > > 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. > > Kinda. > > > > I think each sector has another extra field which SCSI or SATA drives > > internally use to correct errors. > > Can you provide a pointer to the info that SATA drives internally keep > extra bytes per sector for error correction? > > That's what I asked you in the previous mail. How about this document? http://www.serialata.org/documents/S2Ext_1_2_Gold.pdf This isn't the final one but section 4.7.2 will be informative. The following page is also helpful. It tells why they want to introduce 4kb sector. http://www.zdnet.com/blog/storage/are-you-ready-for-4k-sector-drives/731 I guess the way of correcting error is out of the specification of SATA because the specification just define the interface. Thanks, Hirokazu Takahashi. -- 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
