This is a Gigabyte "GA-K8N Ultra SLI" (http://www.gigabyte.com.tw/Products/Motherboard/Products_Spec.aspx?ClassValue=Motherboard&ProductID=1867&ProductName=GA-K8N%20Ultra-SLI) ...
It's a pretty old mobo with 8 onboard SATA ports - 4 from the NForce chipset and 4 from an added Silicon Image sil3114 controller. The NForce ports are 3gb/s, the Simg ports are 1.5gb/s. It was my Windows desktop before I went pretty much all mac + linux, and has worked well over the years - like you said, nice to have 8 onboard sata ports.
Yeah, I know the taped drive is ghetto, and yes - it is the cache drive. I couldn't figure out a place to mount an IDE drive - I tried a few places. Might be better for heat to stick it back by the unused power supply cables. It's the last vestige of my IDE drives.