Replacing the PERC H755 RAID Controller

Last Updated : Feb 24, 2025 |

About this task

Use this procedure to replace the PERC H755 RAID Controller.

Before you begin

Warning:

Opening or removing the system cover when the system is on may expose you to a risk of electric shock. It is required to shutdown the applications/server prior to replacing the PERC H755 RAID Controller.

Ensure that you locate the following components on the system motherboard: Reference the front PERC (front loading) portion of the label located on the inside of the server lid.

  • PERC H755 Controller

  • PERC H755 Controller cable connector (SAS Cables)

Warning:

Always practice safe electrostatic discharge procedures. For more information, see Electrostatic discharge safety.

Warning:

These steps are service impacting, conduct this activity during a customer approved maintenance window.

Procedure

  1. Remove the drive backplane cover.
    1. Slide the backplane cover in the direction of the arrows marked on the backplane cover.
    2. Lift the backplane cover from the system.
      Figure : 1. Backplane cover removal




  2. Disconnect all the cables, observe the cable routing.
  3. Using a Phillips 2 screwdriver, loosen the thumbscrews on the front PERC module.
  4. Pull the front PERC module to disengage from the connector on the drive backplane.
  5. Tilt and lift the front PERC module out of the system.
    Note:

    The numbers on the image below do not depict the exact steps. The numbers represent the sequence of removal.

    Figure : 2. Removing PERC module




  6. Connect the PERC cable to the front of the new PERC module.
  7. Align the front PERC module at an angle until the tray touches the slot in the system.
  8. Press the front PERC module connector with the connector on the drive backplane until firmly seated.
  9. Using a Phillips 2 screwdriver, tighten the thumbscrews on the front PERC module.
  10. Replace the drive backplane cover.
    1. Align the backplane cover with the guide slots on the system.
    2. Slide the backplane cover toward the front of the system until the backplane cover fits into place.