-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Wednesday, 2013-04-24 at 15:15 -0700, Linda Walsh wrote:
Isn't it fair to say that many consumer level drives not only have 1-2 disk errors, but already have such sectors remapped to per-track spares when new? For that matter, if it isn't a drive nearing it's "end of useful life", would you expect users to actually see or notice such an error -- or wouldn't it be handled by the drives internal firmware -- w/recovery via internal ECC and remapping all handled on the fly? Isn't, by 'SMART' standards, a drive at the end of its useful lifespan when it can no longer automatically relocate such data automatically?
Isn't it *normally* the case that a user will only see disk errors on a drive that can no longer remap sectors?
No. The remapping is done only when you attempt to write to a bad sector, then it is remapped. If you attempt to read from a bad sector, it simply fails.
But you are talking raw sectors -- not formatted capacity, no? Wouldn't the MTBF say, a new, 5-year warranty Hitachi 4TB drive rated at 1-2 million hours (for DeskStar V. Ultrastar models) sort of imply that most users will never see a disk error during the useful life of that disk?
My laptop developed just one bad sector at about 4000 hours of use. I did immediately image that partition with dd_rescue. Withing days, while I waited for the replacement dis, I got about a dozen more of bad sectors each time I tested (affecting just one partition, AFAIK). And it is just 500 GB. - -- Cheers, Carlos E. R. (from 12.1 x86_64 "Asparagus" at Telcontar) -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.18 (GNU/Linux) iEYEARECAAYFAlF4XFQACgkQtTMYHG2NR9XYdQCgkaY0/DZ4+Kx49oyvnPPL7JiE tyEAn2cGNP97fnz1MMLLxXJtvlyO6v0I =otHA -----END PGP SIGNATURE----- -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org