trouble with raid array

[machs_fuel]

i'm setting up a file server with an older asus mother board and a promise ide card.
i've got debian installed on the primary master - hda, and there are 3 320 gig ide drives on the ide controller - hde hdf and hdh.

I've got mdadm installed and created the array with the following command

mdadm --create --verbose /dev/md0 --level=5 --raid-devices=3 /dev/hde /dev/hdf /dev/hdh

and then formatted with

mkfs.xfs /dev/md0 -L media_drive

i'm having a lot of

end_request: I/O error, dev 21:40 (hdf), sector 312572151
or
end_request: I/O error, dev 22:40 (hdh), sector 312572047

errors coming up which causes the array to drop hdf and run in degraded mode. i've attached a dumb of dmesg

I'm not really sure how to proceed at this point. all three of the drives are brand new so i dont think that they are the problem. the IDE card was used so i suppose it could be the source. The mobo is probably the weakest link... it seems that the secondary ide channel is dead, but other wise works fine

[objuan]

Hello
It sound like the controller card, is it capable of handling 320 gig drives
look up the specs on the web for the card and proceed from there.

[thevampyrelover]

If the second IDE channel is bad, then you should get the rest of your hardware out of there, while it still works. I have been through MANY a motherboard failure. Normally, when a channel, stops working, it's because the south bridge is going bad. It can destroy the electronics on the hard disks. You can download a utility CD from whoever made the drives, and make sure they are still good.

On setting up the RAID, how did you go about creating /dev/md0? I am running mandriva linux 2006 community, and I am having NO luck whatsoever. No matter what I try, I keep getting a message like, cannot open /dev/md0 does not exist.