Removing the SAN Volume Controller 2145-CF8 high-speed SAS cable

You can remove the SAN Volume Controller 2145-CF8 high-speed SAS cable.

1. Read the safety information to which Preparing to remove and replace parts refers.
2. Follow the procedure in MAP 5350: Powering off a SAN Volume Controller node to verify that the node data is mirrored and synchronized, and that there are no dependent virtual disks (VDisks) before turning off the node.
   
3. Slide the node out on its slide rails to the fully extended position.
   
4. When the node is completely turned off, remove the cable-retention brackets and disconnect the power cables, as described in Removing the cable-retention bracket.
   
5. To make sure that you can replace all cables in the same ports from which they were removed, label the port position of each fibre-channel and Ethernet cable; then remove all cables from the back of the node.
   
6. 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.
   

   You can perform most service actions when the node is fully extended from the rack on its slide rails. If the location of the node in the rack is too high or too low to work comfortably, you can remove the node from the rack.

7. Remove the top cover. See Removing the top cover.
   
8. Remove the high-speed SAS adapter from the slot 2 riser-card connector at the rear of the system board, as described in Removing the SAN Volume Controller 2145-CF8 high-speed SAS adapter assembly.

   The high-speed SAS cable is shown in Figure 1.

   Figure 1. High-speed SAS adapter assembly and high-speed SAS cable in the SAN Volume Controller 2145-CF8

   
   •  1  High-speed SAS cable plugged into the high-speed SAS adapter assembly
   •  2  High-speed SAS adapter assembly
9. Disconnect the high-speed SAS cable from the high-speed SAS adapter.
10. Remove the cable from the blue bulkhead clip behind the disk backplane, as shown in Figure 2.
    Figure 2. 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  Boot-disk SAS cable that is plugged into the disk-controller-and-USB-riser-card assembly
    •  2  Blue bulkhead clip with the high-speed SAS-adapter cable and the boot-disk SAS cable

    Remove the boot-disk SAS cable from the blue bulkhead clip if necessary, before removing the high-speed SAS adapter cable from the clip.

11. Disconnect the high-speed SAS cable from the SAS connector in the center of the back of the disk backplane, as shown in Figure 3.
    Figure 3. Boot-disk SAS cable and the high-speed SAS cable connected to the disk backplane in the SAN Volume Controller 2145-CF8

    
    •  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
12. Remove the cable from the SAN Volume Controller 2145-CF8.