I'd isolate all that RAID stuff from your OS, so the root, /boot, /usr, /etc /tmp, /bin swap are on "normal" partition(s). I know I'm missing some directories, but the point is you should be able to unmount that RAID stuff to adjust it without crippling your system. https://www.howtogeek.com/117435/htg-explains-the-linux-directory-structure-explained/ On 6/27/19, 9:37 AM, "CentOS on behalf of Nikos Gatsis - Qbit" <centos-bounces@xxxxxxxxxx on behalf of ngatsis@xxxxxxx> 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 _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.centos.org_mailman_listinfo_centos&d=DwICAg&c=Ftw_YSVcGmqQBvrGwAZugGylNRkk-uER0-5bY94tjsc&r=Tou2GfskafF_UnC0yPjAjEzLDhbALx-0EDoLp3_iSss&m=XMmSvuGVugmPDRnUAysYbnYlooyLsmYpCfCHpHsL6g4&s=Rnnxkt7ZZq_LFVh2evLuCBlRvf7wij2ZN7wPZGDqa0A&e= This message contains information which may be confidential and privileged. Unless you are the intended recipient (or authorized to receive this message for the intended recipient), you may not use, copy, disseminate or disclose to anyone the message or any information contained in the message. If you have received the message in error, please advise the sender by reply e-mail, and delete the message. Thank you very much. _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx https://lists.centos.org/mailman/listinfo/centos