On 12/01/2011 18:38, Les Mikesell wrote: > I have a 750Gb 3-member software raid1 where 2 partitions are always > present and the third is regularly rotated and re-synced (SATA disks in > hot-swap bays). The timing of the resync seems to be extremely variable > recently, taking anywhere from 3 to 10 hours even if the partition is > unmounted and the drives aren't doing anything else and regardless of > what I echo into /proc/sys/dev/raid/speed_limit_min or _max. Is there > some way to tell if the drives are going bad or speed it up consistently > if they aren't? Ummmm.... RAID is not a backup policy. Fine use hotswap and rsync or similar but you really shouldn't be relying on raid rebuilds for that.