LVD/SE devices usually lack termination options - you'll have to use an external (to the device) terminator or connect it to the middle of your SCSI bus.
Term power has to be provided by at least one device, otherwise termination doesn't work at all. It provides electrical power for all (=both) active/passive terminators on the bus, hence the name.
In theory it doesn't hurt setting up a lot of devices to provide term power BUT in real life I've seen e.g. NCR host adapters screwing up that way. A good way to do it: For short busses (<=1m) and few devices (<=3) use one term power source. For longer/more complex setups use two term power sources at the ends or near the ends (when those vary).
@darkcoder
Ultra SCSI requires active termination, so all ultra drives carry active ones (if at all).
Passive terminators are resistor arrays that look like a little comb (usually two or three) and have to actually be removed from the PCB - attach them to the device, not all are alike!
Active ones come in IC form and there's a jumper to de/activate them.
External terminators are marked; if there's no mark, they're passive.
