On 05/07/2014 05:31 PM, CS_DBA wrote: > Thanks for the advice, can someone point me to a good step by step how > to per setting up a RAID 10 volume per the parted & GPT tools? > You might find this usefull, text on official CentOS Facebook group. GPT is separate from RAID's, so GPT is not covered, but RAID part should be the same: https://www.facebook.com/notes/centos/software-raid-on-rhel-6/10151254589767728 Original text is here: https://linux.dell.com/files/whitepapers/Software_RAID_on_Red_Hat_Enterprise_Linux_v6.pdf For RAID10 I suggest far 2, and boot regular raid1 Creating Boot RAID1: [root at kancelarija]# mdadm --create /dev/md9 --level=1 --raid-disks=2 /dev/sdd1 /dev/sde1 --metadata=0.90 Creating RAID10 far,2: [root at kancelarija]# mdadm --create /dev/md9 --level=10 --layout=f2 --raid-disks=2 /dev/sdd9 /dev/sde9 -- Ljubomir Ljubojevic (Love is in the Air) PL Computers Serbia, Europe StarOS, Mikrotik and CentOS/RHEL/Linux consultant