Mark Knecht <markknecht@xxxxxxxxx> writes: > Even when I got that part worked out I found that the drives just > didn't work well in a RAID. The mdadm list led me to believe that the > root cause was the lack of TLER in the firmware. I don't know how to > show that's true or not... But TLER only matters when the drive can't read a sector. For a normal drive which can easily read all its sectors (at least without retrying for several seconds) TLER doesn't matter. Alignment, sure. Personally I'd use whole disks (not partitions) for RAID-5 and partition the resulting /dev/md* instead, taking into account even longer "sector" size. Or better, use RAID-1 (or RAID-10) with 4 KB block fs, partition /dev/md* with 4 KB alignment, and avoid all these issues. Disks aren't that expensive now. -- Krzysztof Halasa -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
