RAID 1 / disk error / Offline uncorrectable sectors

[Wojciech Puchar]

>
> Replace the hard drive.  Every modern hard drive keeps extra space available
> to "remap" bad sectors.  This happens magically behind the scenes without
> you ever knowing about it.  Once you've hit "uncorrectable" errors, it means

no. usually it means that there was an error when writing that sector, and 
later there is an error on read. madia may be good (quite often is).

if you would be right i wouldn't have my disk running one year after 
having whole block of "uncorrectable errors"

i just rewrote that blocks and they are readable.

drive HAS TO know about bad media to remap, and no HDDs today perform 
verification