If you have 6 sata II connectors on the motherboard and 6 sata hard drives you are good so far. You can use the SSD with the Sata I Sata II or Sata III ports but you will only get the speed of the slowest connection. (1.5Gb/s Sata I - 3.0Gb/s Sata II or 6.0Gb/s with the Sata III). The connectors are backwards compatible so they will work but only at the rated speed. So if you have any Sata III, 6 Gb/s connectors use the SSD on one of those.
The SAS drive will only work if your motherboard has an on board sas chip - most don't except a couple of asus 1366 boards - but it definitely will not work in a Sata port. Or you can buy a pci-e raid card and connect the SAS up to that.
Give us the name and model of the mobo and we can be more specific if need be.