This image shows the layout of the servers and switches in a full rack. From the bottom to the top of the rack, the layout is as follows:

• Power Distribution Unit-B

• Power Distribution Unit-A

• Sun Datacenter QDR InfiniBand Switch (rear), 1U Vented Filler (front)

• U1 to U19: Big Data Appliance Servers, numbered from 1 through 9

• U20: Sun Network QDR InfiniBand Gateway Switch (rear), 1U Vented Filler (front)

• U21: Cisco Ethernet Administration Switch (rear), 1U Vented Filler (front)

• U22: Sun Network QDR InfiniBand Gateway Switch (rear), 1U Vented Filler (front)

• U23 to U28: Big Data Appliance Servers, numbered from 10 through 12

• U29 to U42: 1U vented filter

• U1 to U13: PDU A input 0, PDU B input 2

• U14 to U28: PDU A input 1, PDU B input 1

• U29 to U42: PDU A input 2, PDU B input 0