<p dir="ltr">Always fun learning new tricks.</p>
<p dir="ltr">The installer in C7 is from Fedora 19. It looked like the process to create software raid 1 with triple mirror just didn't exist.<br>
I was wrong :-)</p>
<p dir="ltr">I have an older supermicro 1u that has LSI sas2008 raid chip. It doesn't do triple mirror. It does raid 1e.</p>
<p dir="ltr">The centos 7 installer "did the right thing" as I selected all drives for use and manually created my layout. </p>
<p dir="ltr">I created a 500M /boot and selected type raid 1 and xfs filesystem. Ditto for / and /home. Swap was it's own beast. </p>
<p dir="ltr">Once a mount point is selected, the "tools" icon allows drive selection for the partition. The default is all drives. </p>
<p dir="ltr">I ran a fast, basic install to see what it would do. Mdstat shows I have 3 triple mirror partitions :-) Currently, the big home one is synching (2TB in 4 hours across 3 drives - not bad for SATA2 drives - controller supports SAS2 but the budget didn't).</p>
<p dir="ltr">The swap was placed in an lvm that spanned equal size partitions across all 3 drives. </p>
<p dir="ltr">Nice.</p>
<p dir="ltr">Happy admin.</p>