You're right... I don't see it there either.
I was basing it on Server Products; Spares, parts list and configuration guide - Intel Server Board S1200BT Family which lists it in numerous places. It is also discussed in this document http://download.intel.com/support/motherboards/server/sb/g13326004_s1200bt_tps_r2_0.pdf. I also see the S1200BTL listed as supported here ARK | Intel® Integrated Server RAID Module AXXRMS2LL040,
Can we assume the "Tested memory and hardware list" is incomplete?
No problem... thanks.
Any idea on my original question? The best I can tell the IT firmware is an option but I have found no clear way to actually flash the controller.
My other option is to go with an LSI branded controller which can be easily be flashed with IT firmware but I am trying to avoid using the single slot that is available on the R1304 chassis.
I am new to the ZFS filesystem but based on what I am reading, it is best to have ZFS use its own disk fault tolerance so I won't be using any of the redundancy features built into the AXXRMS2LL040. I am looking to use it as a simple SAS HBA.
I have also read that it is best practice to use the IT firmware on LSI HBAs. Apparently the IR firmware even when disks are configured as JBOD can interfere with the disk fault detection functionality within ZFS.
I am assuming here, obviously, that Intel's firmware is based on LSI's firmware for the LSI2008 controller.
Even the description of "Entry 6Gb SAS/SATA RAID Module with 4 ports supporting LSI IT/IR RAID." on ark.intel.com suggests, at least to me, that it is IT firmware capable but maybe I am reading too much into that.
I tend to agree with your suspicions of the AXXRMS2LL040 raid module. Gut feel is it is a 4 port version of the LSI 9220-8i (OEM version of the 9240-8i used for the IBM M1015 or Intel RS2WC080 rebranded controllers). The 9220-8i can take both the LSI 9240-8i and 9211-8i (IT & IR) firmwares.
Product brief here.