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

You can remove 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)

or

or

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

1. Read the safety information to which Preparing to remove and replace parts refers.
2. Follow the procedure in MAP 5350: Powering off a node to verify that hosts will not lose access to data in volumes before you power off the node.
3. Slide the node out on its slide rails to the fully extended position.

   You can accomplish most service actions when the node is fully extended from the rack on its slide rails. 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. 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.

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: If you must remove the node from the rack to work on it, perform the following procedure to remove all cables and remove the node from the rack:
   1. 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.
   2. Remove the node from the rack and place it on a flat, static-protective surface. See Removing a node from a rack.
6. Remove the top cover, as described in Removing the top cover: 2145-CG8 or 2145-CF8.
7. Remove the USB service-controller cable from the USB connection ( 1  in Figure 1) on the disk-controller and USB riser-card assembly ( 3 ), as described in Removing and replacing the USB service controller cable: 2145-CG8 or 2145-CF8.
   Figure 1. USB riser-card assembly (SAN Volume Controller 2145-CF8 shown)

   
   •  1  USB connector
   •  2  Disk-controller connector
   •  3  USB riser-card assembly (shown without the disk controller)
8. Remove the SAS cable that runs to the boot-drive-bay connector on the left side of the back of the disk backplane, when viewed from the rear, from the connector on the disk-controller and USB riser-card assembly that is closer to the power supply.
9. If present, remove the SAS cable that runs to disk-drive-bay connector in the center of the back of the disk backplane, when viewed from the rear, from the connector on the disk-controller and USB riser-card assembly that is closer to the front of the node.
10. Grasp the disk controller near the end next to the power-supply cage while you press the black plastic tab (next to the power supply) toward the power supply.
    Figure 2. Disengaging the disk-controller front-retention bracket and removing 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
11. Pull up on the disk controller ( 3  in Figure 2) until the disk-controller and USB riser-card assembly ( 2 ) disengages from the connector on the system board.
12. Place the disk-controller and USB riser-card assembly on a flat, static-protective surface.
13. If you are instructed to return the disk-controller and USB riser-card assembly, follow all packaging instructions, and use any packaging materials for shipping that are supplied to you.