I was all ready to make a nice 6 TB RAID 5 array (5 x 1.5 TB HDs) when i started reading about the dangers of RAID 5 due to unrecoverable read errors. It makes sense that if you have an unrecoverable error on a parody portion of the data, it can't rebuild a file w/o the parody data. But my question is as follows:
1) Will 1 unrecoverable read error mean your entire array is doomed and unrecoverable, or will just a portion of the data, say whatever few files the unreadable parody data was for, be unrecoverable and if those files just happen to be critical files you are SOL?
2) Is RAID 10 affected by this same problem? I realize there is no parody data for RAID 10, but if when rebuilding a RAID 10 array there is an unrecoverable read error, will you loose the entire array (like with RAID 5) or just the file associated with the unrecoverable data (which is what I would guess would happen)?
Although I'm not personally concerned with if this would happen for RAID 0 or RAID 1, if you happen to know, please include that in your reply.
Thanks.
1) Will 1 unrecoverable read error mean your entire array is doomed and unrecoverable, or will just a portion of the data, say whatever few files the unreadable parody data was for, be unrecoverable and if those files just happen to be critical files you are SOL?
2) Is RAID 10 affected by this same problem? I realize there is no parody data for RAID 10, but if when rebuilding a RAID 10 array there is an unrecoverable read error, will you loose the entire array (like with RAID 5) or just the file associated with the unrecoverable data (which is what I would guess would happen)?
Although I'm not personally concerned with if this would happen for RAID 0 or RAID 1, if you happen to know, please include that in your reply.
Thanks.