I have done this a couple of times successfully. I did set the boot partitions etc as RAID1 on sda and sdb. This I believe is an old instruction and was based on the fact that the kernel needed access to these partitions before RAID access was available. I'm sure someone more knowledgeable will be able to say whether this is still required. Gary On Thursday 27 June 2019 14:36:37 Nikos Gatsis - Qbit wrote: > Hello list. > > The next days we are going to install Centos 7 on a new server, with > 4*3Tb sata hdd as raid-5. We will use the graphical interface to install > and set up raid. > > Do I have to consider anything before installation, because the disks > are very large? > > Does the graphical use the parted to set/format the raid? > > I hope the above make sense. > > Thank you in advance. > > Nikos