Oracle Exadata X10M Service Manual page 160

Remove the fan tray from the server.
h.
See Remove the Fan
Pull each storage drive out far enough to disengage it from the backplane.
2.
See Remove a Storage
Note:
It is not necessary to completely remove the storage drives from the
server; simply pull them out far enough to disengage them from the
backplane. If you do remove the storage drives from the server, make a
note of their locations so that you can reinstall them in the same
locations.
Disconnect the cables from the disk backplane.
3.
Ensure all cables are moved out of the way so they do not interfere with the disk
backplane removal procedure.
Disconnect the three SAS cables from the 12-Drive backplane [1].
a.
See also Remove SAS Storage Drive
Disconnect the two power cables from the 12-Drive backplane [2].
b.
Press and hold the button on the connector to disengage the locking
mechanism, then gently pull the connector from the disk backplane. Note the
cable connections in order to ease proper reconnection of the cables.
Tray.
Drive.
Cables.
Chapter 14
Remove the 12-Drive Backplane
14-6