Hello All, I have two questions to ask for idea from you all as below: 1. My Dedicated server using SATA 3 two Hard Disk. we are using software RAID(mdadm) to manage its. in this week I saw it resync two time already and when it resync. do you have any idea to manage this issue? 2. my server is alway high load every 1 hours to 2hours. when I was check htop or top. It have no problem with CPU at all. But when I check with atop I saw my Hard Disk very busy with process of mysql. due my experience to optimize mysql server is abit small range I would like to ask some idea from you. Please kindly share. your idea is very important to me. best regards, Steve.