> I had a mirrored pair that kept getting data corruption. It turned > out that one of the drives had a bad bit in an internal buffer, and > would occasionally return 1 for the 12th bit (or similar) of each > sector even when it should be zero. Neither software raid or > hardware raid would cope with that. How did you manage to figure out what was the reason for this corruption ? I mean, does there exist a some sort of "generic" way how to solve such errors, or was it just hard work in comparing what got written to the different disks ... > Some people find that their IDE controller works fine until they try > to use RAID1. RAID1 hits multiple discs concurrently a lot, and some > (few, specific) ide controllers don't appear to cope. You probably > would not get that with hardware raid. You can with software raid > because it is a "whole-system" thing. Can you name the controllers which have had problems in this area ? I'm having big problems in Linux 2.4 kernels IDE-stability with heavy I/O (all disks are RAID1), perhaps either the Sil680 or HPT374 are just problematic controllers ... ? (it would be just great to solve all of these problems by buying new IDE-cards :) Regards, Tomi Orava - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html