IBM Power 720 - Page 100

86 IBM Power 720 and 740 Technical Overview and Introduction
General rules for 12X IO Drawer configuration
If you have two processor cards, spread the I/O drawers across two busses for better
performance. Figure 2-27 shows configuration examples to attach 12X I/O Drawers to a
Power 720. Other options are also available.
Figure 2-27 12X I/O Drawer configuration for a Power 720 with one GX++ slot
PCIe
720
+
+
One I/O-Drawer
PCIe
720
+
+
Two I/O-Drawers
PCIe
PCI-X
720
+
+
One I/O-Drawer
PCI-X
720
+
+
Four I/O-Drawers
PCI-X
PCI-X
PCI-X