Tentonine, WC17M is actually compatible with both the 6220 as well as the 6220 II. Which is possibly why you were seeing both referenced.
I have a C6220 II with a 2.5" expander backplane. However, I don't need fast storage performance in this machine and want to use the PCI slot for something else, so I was thinking of removing the RAID controller and directly attaching the motherboard controller, which supports only SATA. My drives are SATA, rather than SAS, but my understanding is that this won't work because the controller should support SAS in order to use the expander. I was wondering if it is possible to change a setting, perhaps a jumper, to allow the backplane to function in a direct SATA mode, rather than as an expander, so that I can use the direct motherboard connection? I only need two drives per node, so I don't need to use the expander. Thanks.
SAS expander backplane reduce to direct SATA mode?