From what I can gather, my 875 motherboard has two
separate RAID controllers: Intel and Promise.
The Intel controller is part of the Southbridge:
under Windows XP, it can support 6 IDE devices:
2 for IDE0, 2 for IDE1, and 2 for the SATA ports
(labeled SATA1 and SATA2).
The Promise controller is entirely separate,
and it supports 1 x ATA/133 PATA connector,
and 2 more SATA ports on-board (labeled
SATA_RAID1 and SATA_RAID2).
Both controllers can support plain ATA-mode (non-RAID)
or different RAID modes, depending on BIOS and
other configuration settings.
Here is some documentation we found today:
82801ER (ICH5R) is the Intel on-board RAID controller:
http://www.intel.com/design/chipsets/manuals/298600.htm
Google
http://www.google.com
searching for:
+"Intel Application Accelerator" +"RAID Edition"
found:
http://support.intel.com/support/chipsets/iaa_raid/sb/CS-009328.htm
http://support.intel.com/support/chipsets/iaa_raid/sb/CS-009333.htm
CHECK 'EM OUT!
We had to find these finished documents, because
the .pdf on the CD-ROM that came with our motherboard
was still a DRAFT. Each .pdf is about 85 pages long,
and we've not had a chance to read everything yet.
Hopefully, you will find the answers you seek
in the documents above. Good luck!
Sincerely yours,
/s/ Paul Andrew Mitchell
Webmaster, Supreme Law Library