man zfs, man zpool, cron, your mta of choice (I like dma) :) schedule a zpool scrub every month, send an email if it finds errors. zpool status will show the e

man zfs, man zpool, cron, your mta of choice (I like dma) :) schedule a zpool scrub every month, send an email if it finds errors. zpool status will show the errored drive. zpool replace will initiate the drive replacement.