No, you can buy a sca-to-68 pin converter. This simply connects to the rear of the drive & allows it to be connected to a normal 68pin scsi cable. It also provides the power connecter (SCA drives as you've probably noticed don't have a seperate power connector like normal drives cos of the hot-swappable thing).
The one below is only £4 :
http://www.scan.co.uk/Products/ProductInfo.asp?WebProductID=1955
The one below is only £4 :
http://www.scan.co.uk/Products/ProductInfo.asp?WebProductID=1955