kozlow;
you could use an iostat -En | grep Vendor. Or just use iostat -En (this will give you extended info on the device, not totally useful.
Just be aware that some arrays, A1000, A3500 will not show all drives, I think it just shows A1000. Also if you have any multipathed devices it may duplicate the entries. Dulpicate entries can be figured out by looking at the serial#'s provided by the iostat -En output.
Thanks
CA