PROGRESS!!!!
I swapped the SATA drives with the bad server (13) and a perfectly working server (05).
The problem MOVED to the working server!
What in the WORLD??!
Since I have two misbehaving servers, I'm going to build two working servers, then break the 0+1 mirrors on them by removing 1 drive from each.
This will give me two drives from a mirror set of a working server.
I will remove all drives from the bad servers (four in total) and replace them with just ONE of the working server drives (being sure to place them in the same position they came from on the working servers.
Leaving the working servers that donated drives powered OFF, I will boot the bad servers on ONE drive, where each drive was from a working servers' mirror set.
Once booted, i will insert bad drives in each server and this SHOULD force the mirror to overwrite the bad drives and clobber whatever is on them that makes things go bad during installation.
I HOPE!
Once all is working, I will force them to PXE boot and pick up their own installations and overwrite the install that came with the donor drives.
I will then insert the remaining bad drives into the booted working servers and fore them to overwrite THOSE "troublesome" drives during a mirror rebuild.
this SHOULD eradicate the contents all of four of the problematic drives.
I have NO why i have to do this, because I have erased these drives several times using two different Array configuration utilities!
Results to be posted next.