Replacing the disk-controller and USB riser-card assembly: 2145-CG8 or 2145-CF8

You can replace the disk-controller and USB riser-card assembly on a SAN Volume Controller 2145-CG8 or 2145-CF8 node.

Before you begin

DANGER
Multiple power cords. The product might be equipped with multiple power cords. To remove all hazardous voltages, disconnect all power cords. (L003)
Multiple plugs: first set
 or
Multiple plugs: second set
 or
Multiple plugs: third set

Take precautions to avoid damage from static electricity. Wear an anti-static wrist strap and use a static-protected mat or surface.

To correctly perform this task, you must have alcohol wipes and thermal grease available. If you do not already have them, order these separately.

About this task

To replace the disk-controller and USB riser-card assembly, complete the following steps:

Procedure

  1. Turn off the node while ensuring that its data is mirrored and synchronized. See MAP 5350: Powering off a node for information.
  2. When the node is completely turned off, remove the power cable-retention brackets and remove the power cables from the rear of the node.
  3. After labeling the Fibre Channel cables and the Ethernet cables with their locations, remove all of the cables from the node.
  4. Optional: Remove the node from the rack and place it on a flat, static-protective surface. See Removing a node from a rack.
  5. Remove the top cover, as described in Removing the top cover: 2145-CG8 or 2145-CF8.
  6. Remove the disk-controller and USB riser-card assembly from its packaging and place the riser-card assembly on a flat, static-protective surface.
  7. Install the disk-controller and USB riser-card assembly.
    1. Tilt the USB riser-card assembly slightly and insert the end of the disk controller in the slot on the retention bracket as shown in the following illustration.
      Figure 1. Engaging the disk-controller front-retention bracket and replacing the riser assembly and disk controller
      Engaging the disk-controller front-retention bracket and replacing the riser assembly and disk controller
      Although the SAN Volume Controller 2145-CF8 is shown in the illustration, the SAN Volume Controller 2145-CG8 also includes the following parts:
      •  1  Disk-controller front-retention bracket
      •  2  Disk-controller and USB riser-card assembly
      •  3  Disk controller
      •  4  Alignment post
      •  5  Plastic tab
    2. Align the riser-card assembly keys correctly with the connector on the system board and press down on the assembly until it is seated firmly into the connector on the system board.
  8. Connect the USB service-controller cable to the USB connector on the USB riser-card assembly, if the cable is not connected, as described in Removing and replacing the USB service controller cable: 2145-CG8 or 2145-CF8.
    Figure 2. USB riser-card assembly (SAN Volume Controller 2145-CF8 shown)
    USB riser-card assembly (SAN Volume Controller 2145-CF8 shown)
    •  1  USB connector
    •  2  Disk-controller connector
    •  3  Disk-controller and USB riser-card assembly
    Figure 3 shows the USB service-controller cable connected to the disk-controller and USB riser-card assembly.
    Figure 3. USB service-controller cable connected to the disk controller and USB riser card (SAN Volume Controller 2145-CF8 shown)
    USB service-controller cable connected to the disk controller and USB riser card (SAN Volume Controller 2145-CF8 shown)
    •  1  USB service-controller cable attached to the USB riser card
    •  2  Service controller cable
  9. Connect the SAS boot-drive cable to the connector on the disk controller that is closer to the power supplies.

    The boot-drive cable is the cable to drive bays 4 and 5 in the SAN Volume Controller 2145-CF8 node or the cable to the boot-disk backplane in the SAN Volume Controller 2145-CG8 node.

    Figure 4 shows the boot-disk SAS cable connected to the disk backplane.
    Figure 4. Boot-disk SAS cable and the high-speed SAS cable connected to the disk backplane in the SAN Volume Controller 2145-CG8 or 2145-CF8
    Boot-disk SAS cable and the high-speed SAS cable connected to the disk backplane in the SAN Volume Controller 2145-CG8 or 2145-CF8
    The boot-disk cable is shown disconnected from the disk controller so that you can see the connectors on the back of the disk backplane more clearly.
    •  1  Boot-disk SAS cable that is plugged into the disk-drive backplane to support drive bay 4
    •  2  High-speed SAS-adapter cable that is plugged into the middle of the backplane to support drive bays 0, 1, 2, and 3
    Figure 5 shows the boot-disk SAS cable connected to the disk controller.
    Figure 5. Boot-disk SAS cable routed through the blue bulkhead clip and connected to the SAS disk controller in the SAN Volume Controller 2145-CG8 or 2145-CF8
    Boot-disk SAS cable routed through the blue bulkhead clip and connected to the SAS disk controller in the SAN Volume Controller 2145-CG8 or 2145-CF8
    •  1  Disk-controller cable connected to the disk-controller connector that is closer to the power supplies
    •  2  Blue bulkhead clip with the boot-disk SAS cable and the underlying high-speed SAS adapter cable, if present
  10. Replace the top cover. See Replacing the top cover.
  11. Place the node in the rack. See Replacing a node in a rack.
  12. Slide the node into the rack.
  13. Reconnect the power cords and the Fibre Channel and Ethernet cables. Ensure that you replace the Fibre Channel and Ethernet cables in the same ports from which they were removed.
  14. Replace the cable-retention bracket. See Replacing the cable-retention bracket.
  15. Replace the cable-management arm. See Replacing the cable-management arm.
  16. Turn on the node.
Parent topic: Replacing the disk-controller and USB riser-card assembly