Image shows the layout of the servers and switches in Oracle Exadata Database Machine X4-2, X5-2, and X6-2 Half Rack.
Front view, from the bottom to the top of the rack, the layout is as follows:
U1: Solid Filler
U2 - U15: Exadata Storage Servers
U16 - U19: Oracle Database servers
U20 - U22: Vented Filler
U23 - U42: Solid Filler
Rear view, from the bottom to the top of the rack, the layout is as follows:
U1: Empty
U2 - U15: Exadata Storage Servers
U16 - U19: Oracle Database servers
U20: 36-Port IB Switch
U21: Cisco 4948
U22: 36-Port IB Switch
U23 - U42: empty