[CentOS] raid 6 on centos 7

[Alessandro Baggi]

Il 12/12/2016 17:15, popeeni at chmail.ir ha scritto:
>  i have 6 sata hdd 2 TB . i want install  centos 7 on these hdd  in raid 6 mode.
>
> how can i do it ?
>
>
>
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If you have a dedicated controlled (supported) you can create the raid 
from controller menu and install.

If you want install CentOS on RAID6 using mdadm, you must make boot 
partition away from raid6. I've not tried a RAID6 but when tried raid5 I 
did created a boot partition and installed the os on raid5.
(Correct me if things are changed).

Using mdadm you can install /boot on raid1 and the rest on raid6, or the 
entire os on raid1 and data on raid6 (with this you can create only 
raid1 from anaconda and raid6 from installed system).

I don't know what type of hardware you are using but if you use 
motherboard controller you can have poor performances, so if you want 
try for testing is fine, for performance productive server I suggest to 
use a dedicated controller.

Hope that helps.