can you guess? wrote:> Vitesse VSC410
> Yes, it will help detect > hardware faults as well if they happen to occur between RAM and the > disk (and aren't otherwise detected - I'd still like to know whether > the 'bad cable' experiences reported here occurred before ATA started > CRCing its transfers), but while there's anecdotal evidence of such > problems presented here it doesn't seem to be corroborated by the few > actual studies that I'm familiar with, so that risk is difficult to > quantify. It may not have been a bad cable and it is a cheap highpoint card but I was running the card in RAID0 and getting random corrupted bytes on reads that went away when I switched to JBOD. The data was fine on disk but I would get a corrupted byte every 250-500MB and the only reason I noticed was because I was using Unison to sync folders and it kept reporting differences I knew shouldn't exist. So "bad cable" type things do happen and ZFS probably would have helped me notice it sooner. If I hadn't had another copy of the data I may have been able to still recover it but only because most of the files where 1-1.5MB jpegs and the errors moved around so I could have just copied a file repeatedly until I got a good copy but that would have been a lot of work. Jonathan _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
