Removing The Hard-Drive Backplane:
1. If installed, remove the front bezel.
2. Turn off the system, including any attached peripherals, and disconnect the system from the electrical outlet and peripherals.
CAUTION: To prevent damage to the drives and backplane, you must remove the hard drives from the system before removing the backplane.
CAUTION: You must note the slot number of each hard drive and temporarily label them before removal so that you can replace them in the same locations.
3. Remove all hard drives.
4. If applicable, rotate the system feet inward and lay the system on its side on a flat, stable surface.
NOTE: For systems installed with the wheel assembly, ensure that you lay the system on a sturdy, stable surface with the wheel assembly extending off the edge of the surface.
5. Open the system.
6. Disconnect the SAS, power, signal, and I2C cables from the hard-drive backplane.
NOTE: For the x8 backplane, press the SAS connector and push the connector toward the top of the system to release the SAS cable from the backplane.
7. Pull the release pin and lift the backplane out of the system.