@pirivan
Im afraid you have some unlucky hardware mobo-card-hdd combination, since here I have just tried hooking up 8 drives on saslp-mv8 card and no problems, have restarted a few times, copied a few gigs of data onto server without a hickup..
im ruining this on asus p5bv/sas mobo with 2× sat2-mv8 and 1× saslp-mv8 card
You running WHS or something else?