The redundant systems are in play all the time. That is, we support n+1 redundancy with our platforms, and all of those platforms are carrying load. It’s just that there are enough platforms so that if one goes off-line, the rest can handle the load. With respect to power, we test the UPS systems quarterly but we are hesitant to actually pull power from equipment by taking a UPS off-line. In our current configuration, UPS “C” is handling just about all the equipment. UPS “A” and “B” provide redundancy for UPS “C”. All of our gear has dual power supplies, so each piece of equipment is connected to UPS “C” and either UPS “A” or UPS “B”.