Oracle Exadata X10M Service Manual page 164

Remove the fan tray from the server.
h.
See Remove the Fan
Locate the disk backplane signal cable.
2.
The disk backplane signal cable is connected between the 4 or 12 disk backplane
and the motherboard connector, which is located between PCIe slot 4 and the
motherboard handle. The signal cable is routed from the disk backplane, through
the left-side cable trough, and then through the motherboard handle before
connecting to the motherboard [1, 2].
Remove the Disk Backplane Signal Cable
Tray.
Chapter 14
14-10