It's a very old RAID card, Highpoint RR2340 and their drivers only support up to 2.6.32
Saw that I missed the 2 in the previous post, 6.32 is supposed to be 2.6.32 and yes I've tried CentOS 7 with this H/W

While that maybe true for graphics, wireless, motherboards etc it isn't always for PCI I/O cards like ADC or DACs. Many vendors do not maintain their drivers which is not good and there may not be any hardware required by the OP that has support for latter kernels or unable to purchase newer.

I agree that hanging onto to old stuff can be problematic and I still use hardware that is only supported by DOS. Eventually I will run out of parts but at the moment it isn't cost effective to purchase a newer unit.

I see the OP posted the problematic card... In that case upgrading the RAID card might be a better choice.

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Absolutely true; didn't know what the OP's problematic card was. I agree totally with the assessment that upgrading RAID is better.

better choice, yes but that is not in my economy at he moment as I have other things breathing down my neck which has a cost way more than a new card for this, also much more important.

Just to let everyone know.

I missed one important bit when trying to upgrade the old CentOS 6.6 version.
At installation time I didn't realize that it skipped the old disks since there was an old RAID metadata on them.
I did 'dmraid -r -E' and rebooted still the same thing, tried that again and after a new reboot, the disks could be used and I tried an upgrade that just took no more then a few seconds,
after a reboot the new CentOS 6.9 worked perfectly
Off course you guys can't fix my problem when you don't know all the info but if I saw that info and took a notice of that IMPORTANT info I would have fixed it myself, so sorry for that.

Just to let everyone else know that might be using an old HighPoint RockRaid 2340 (rr2340), one dude at github has created patches so you can get the rr2340 working on kernel up to version 4x.
They are for Gentoo but just use the patches for any distro.
I haven't tried them yet due to a 'non working brain' that I won't even mention here just not to be laughed at
but he says he's using that himself and they are working perfectly
When I get this system up and running I will do that thing you recommend me, upgrade to CentOS 7

RockRaid rr2340 patches on github: https://github.com/dsiggi/RocketRAID for kernel 3.11 and 4x


OAO