fwiw, with linux md, you can (and should) scrub the array periodically. for raid in /sys/block/md*/md/sync_action; do echo "check" >> ${raid} d

fwiw, with linux md, you can (and should) scrub the array periodically. for raid in /sys/block/md*/md/sync_action; do echo "check" >> ${raid} done which will check and fix errors (or fail). i run this weekly as a cron job. of course, it doesn't help with any data that are corrupted and read before it runs.