I have a Dell PowerEdge masterbackend with 465GB of LVM/ext3 storage. It has two capture cards, #3 and #4. I have an Asus Pundit as my frontend/slave backend with two PVR-250 cards in it (#1 and #2). It has a 10GB hard drive for booting. All video goes over NFS at 100Mbps/Full Duplex. It's been working just peachy.