[CentOS] Automatical resync of MD, why?

[RedShift]

happymaster23 wrote:
> Hello,
> 
> I have three MDs on two HDDs in RAID 1. In last days, thanks to my
> monitoring (which is installed longer time), I have recognized, that
> one of these MDs is automatically started resync. First was at 25th
> October and second resync of the same MD was today. It started in same
> daytime (about 4:00 AM). Now is MD resynced and working well. Can
> someone tell me what means this automatic resync? Is it standard? Is
> it means some possible problems with one HDD (but other two MDs are
> working without resync)?
> 
> Thank you
> Martin Šťastný


Have a look at /etc/cron.weekly


Glenn