Removing the SAN Volume Controller 2145-CF8 disk-drive backplane

Use the following information to remove the SAN Volume Controller 2145-CF8 disk-drive backplane.

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. Optional: 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.
   

   You can leave the fibre-channel and Ethernet cables connected, if you are using the cable-management arm and if you are not removing the node from the rack.

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 service controller. See Removing the service controller.
   
8. Pull the disk drives and filler panels out of the node slightly to disengage them from the back plate.
   See Removing the disk drive.
9. Remove the top cover. See Removing the top cover.
   
10. Remove fans 4, 5, and 6, as described in Removing the SAN Volume Controller 2145-CF8 fans.
11. Disconnect all cables from the disk-drive backplane.
    Note: You can also choose to disconnect the cables after removing the backplane from the brackets, if that is easier for you.

    The high-speed SAS cable and the boot-disk SAS cable are shown in Figure 1.

    The boot-disk cable is shown after disconnecting the cable from the disk controller so that you can see the connectors more clearly.

    Figure 1. 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. Lift up the disk-drive backplane ( 1  in Figure 2) to disengage the backplane tabs ( 2 ) from the slots ( 3 ) on the backplane bracket; then, push the backplane backwards until it is clear of the slots on the bracket and remove it from the node.
    Figure 2. The SAN Volume Controller 2145-CF8 disk backplane

    

    •  1  Disk-drive backplane
    •  2  Backplane tabs
    •  3  Backplane-bracket slots
13. If you are instructed to return the disk-drive backplane, follow all packaging instructions, and use any packaging materials for shipping that are supplied to you.