Removing and replacing a midplane in the 5147-024, ESLL, or ESLS storage enclosure

Learn how to remove and replace the midplane in the 5147-024, ESLL, or ESLS storage enclosure.

About this task

The tools needed to complete this task are a 5 mm flat screwdriver, a Philips #1 screwdriver, and a Philips #2 screwdriver.

Attention:
  • Failure to follow the steps sequentially for this field replaceable unit (FRU) removal or installation might result in damage to the FRU or system.
  • The failed midplane must be replaced only with a new midplane; a midplane cannot be reused from another disk drive enclosure. If the midplane was previously installed in a different disk drive enclosure, the enclosure serial number might not be properly updated during power-on.
  • Replace only the midplane FRU in this procedure until power is restored to the disk drive enclosure with the new midplane installed. The original enclosure services managers (ESMs) must be used in this procedure to preserve the serial number.
Use the following precautions whenever you handle electronic components or cables:
  • Attach a wrist strap to an unpainted metal surface of your hardware to prevent electrostatic discharge (ESD) from damaging your hardware.
  • If you do not have a wrist strap, before you remove the product from ESD packaging and installing or replacing hardware, touch an unpainted metal surface of the system for a minimum of 5 seconds.
  • Keep all electronic components in the shipping container or envelope until you are ready to install them.
  • If you remove and reinstall an electronic component, temporarily place the component on an ESD pad or blanket, if available.
  • During replacement with the system power turned off, do not combine the replacement of any ESM with the replacement of the midplane unless you cycled the power of the storage enclosure. You must replace only one new part at a time when the system power is off. If multiple parts are replaced at the same time when the system power is off, the serial number is not preserved.

Procedure

  1. Take the storage enclosure offline. This procedure is not concurrent because the power must be removed.
  2. To service the midplane, remove the power cords to the disk drive enclosure. Removing the power cords from the disk drive enclosure might require powering off the system or partition that is using the disk drive enclosure.
  3. Remove both power supplies from the disk drive enclosure. For instructions, see Removing and replacing a power supply in the 5147-024, ESLL, or ESLS storage enclosure.
  4. Carefully remove each disk drive and label it with the slot from which it was removed. For instructions, see Removing a disk drive or solid-state drive

    After the midplane is replaced, the disk drives must be inserted back into the same slots from which they were removed.

  5. Label and remove all SAS cables to the ESMs.
  6. Remove both ESMs. For instructions, see Removing and replacing an enclosure services manager in the 5147-024, ESLL, or ESLS storage enclosure.
  7. Remove the bezels and unscrew the drawer from the rack.
  8. Remove the midplane assembly screws as shown in Figure 1. Label the screws with the location from which they are removed.
    Figure 1. Removing the midplane assembly screws
    Removing the midplane assembly screws
    1. Remove the enclosure from the rack, turn it upside down, and place the enclosure on a flat surface.
    2. Using a #1 Phillips screwdriver, remove the four screws (A) from the bottom of the enclosure.
    3. Turn the enclosure top side up and place it on a flat surface. Using a #2 Phillips screwdriver, remove the four screws (B) on the right and left sides of the enclosure.
    4. Remove the four screws on the mounting brackets. Screws at (C) use a #2 Phillips screwdriver; screws at (D) use a straight-slot screwdriver.
  9. Remove the midplane assembly by sliding the assembly straight out of the enclosure.
  10. Install the midplane assembly.
    1. Grasp the midplane assembly (A) with two hands and hold it at a 20-degree angle as shown in Figure 2.
    2. Insert the three tabs (B) on the midplane assembly into the tab holes in the enclosure. Ensure that the tabs go over the mesh gasket material; do not allow the tabs to catch and crush the mesh.
      Figure 2. Midplane assembly installation
      Midplane assembly installation
    3. Rotate the front of the assembly down. Ensure that the midplane is fully seated into the enclosure.
  11. Install the midplane assembly screws. Refer to Figure 1.
    1. Insert four screws (B) on both the right and left sides of the enclosure. Insert the screws, but do not fully tighten them now.
    2. Insert four screws (C) and (D) at the front of the enclosure. Insert the screws, but do not fully tighten them now.
    3. Turn the enclosure upside down and use the four screws (A) to secure the midplane to the bottom of the enclosure. Securely tighten these bottom screws.
    4. Turn the enclosure top side up and securely tighten the screws at (B), (C), and (D)
    5. Install the enclosure in the rack.
  12. Screw the drawer into the rack and install bezels.
  13. Install both of the original ESMs. For instructions, see Removing and replacing an enclosure services manager in the 5147-024, ESLL, or ESLS storage enclosure.
  14. Install SAS cables to the ESMs.
  15. Install both original power supplies. For instructions, see Removing and replacing a power supply in the 5147-024, ESLL, or ESLS storage enclosure.
  16. Install the disk drives making sure that each disk drive is inserted back into the same slot from which it was removed. After the midplane is replaced, the disk drives must be inserted back into the same slots from which they were removed. For instructions, see Replacing a disk drive or SSD.
  17. Restore power to the power supplies of the disk drive enclosure and power on the system or partition.
  18. Check the LEDs to make sure that the enclosure is fully operational.
Parent topic: Removing and replacing parts in the 5147-024, ESLL, and ESLS storage enclosures


Last updated: Tue, March 06, 2018