Correction I WAS able to load it up. Took me about 4 reloads but I got it. Still on 7.3 and currently syncing the drives. I used sme nospare setting for install.
4-146gb scsi's and 1 TB Sata.
You are aware that that under your installation method, most of that 1TB drive is wasted don't you?
[root@dell700 ~]# cat /proc/mdstat
Personalities : [raid1] [raid5]
md2 : active raid5 sda2[0] sde2[5] sdd2[3] sdc2[2] sdb2[1]
And you have something strange here. sde2[5]? shouldn't that be sde2[4]?
572588032 blocks level 5, 256k chunk, algorithm 2 [5/4] [UUUU_]
That doesn't look good either [5/4] means 5 drives, 4 working and this [UUUU_] indicates the last drive in the array is not syncing.
Anyhow, the OP wasn't trying to add a sata drive to his raid array, he is trying to mount an extra drive outside of the array that happens to be a sata drive.
What you are trying to do is including the sata drive into the raid array containing 4 other scsi drives (probably not the best idea).
If you are trying to create a 5 drive raid5 array with mixed drive types, please start a new topic and copy/paste your posts there.
If you are trying to mount a 5th drive outside the originally installed raid5 array, you need to start over and try again.