Replacing the SAN Volume Controller 2145-CF8 disk-controller and USB riser-card assembly

You can replace the SAN Volume Controller 2145-CF8 disk-controller and USB riser-card assembly.

1. Turn off the node while ensuring that its data is mirrored and synchronized. See MAP 5350: Powering off a SAN Volume Controller node for more 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 the SAN Volume Controller from a rack.
   
5. Remove the top cover. See Removing the top cover.
   
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 SAS 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

      

      •  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 SAN Volume Controller 2145-CF8 service controller cable.
   Figure 2. USB riser-card assembly for the SAN Volume Controller 2145-CF8

   
   •  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 in the SAN Volume Controller 2145-CF8

   

   •  1  USB service-controller cable attached to the USB riser card
   •  2  Service controller cable
9. Connect the SAS boot-drive cable (the cable to drive bays 4 and 5) to the connector on the disk controller that is closer to the power supplies.
   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-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-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 for solid-state drives (SSDs), if present
10. Replace the top cover. See Replacing the top cover.
    
11. Place the node in the rack. See Replacing the SAN Volume Controller 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.