Replacing the SATA drive backplane and cables: 2145-SV1

You can replace the SATA drive backplane and cables on a SAN Volume Controller 2145-SV1 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)

This service action assumes that the following conditions exist.

• The node is turned off. If you must turn off the node, ensure that hosts will not lose access to data in volumes, as described in MAP 5350: Powering off a node.
• The power cables are disconnected.
• The top covers are removed, as described in Removing the top covers: 2145-SV1.

If you need to replace the SATA cables, the following conditions must also be met.

• The PCI express riser assembly 1 is removed, as described in Removing a PCI express riser-card assembly: 2145-SV1.
• The air baffle is removed, as described in Removing the air baffle: 2145-SV1.
• The fan cage assembly is removed, as described in Removing the fan bracket: 2145-SV1.

Figure 1 shows the location of the SATA drive backplane and connectors. To replace the disk-drive backplane, complete the following steps.

Figure 1. 2145-SV1 SATA drive backplane

•  1  SATA drive backplane
•  2  SATA drive backplane power cable connector on the SATA drive backplane
•  3  SATA drive backplane SATA cable connector 2
•  4  SATA drive backplane SATA cable connector 1 (connects to SATA cable connector 1 on the main board)
•  5  SATA cable connector 2 on the main board
•  6  SATA cable connector 1 on the main board
•  7  SATA drive backplane power cable connector on the main board

1. Connect the power and signal cables to the replacement backplane.
   Figure 2. Power and cable connectors on the 2145-SV1 disk drive backplane

   
2. Align the backplane with the backplane slot in the chassis and the small slots on top of the hard disk drive cage.
3. Lower the backplane into the slots on the chassis.
4. Rotate the top of the backplane until the front tab clicks into place into the latches on the chassis.
   1. Use one of the SATA cables to connect SATA 1 on the backplane to SATA 1 on the main board (that is, the leftmost SATA connectors as viewed from the front of the 2145-SV1).
   2. Use the other SATA cable to connect SATA 2 on the backplane to SATA 2 on the main board (that is, the rightmost SATA connectors as viewed from the front of the 2145-SV1).
   3. Connect the SATA drive backplane power cable between the backplane and the main board.
5. If you removed the fans, reinstall them, as described in Replacing the fans: 2145-SV1.
6. Reinstall the covers, as described in Replacing the top covers: 2145-SV1.
7. Reinstall the disk drives and drive-bay blank electromagnetic compatibility (EMC) filler assemblies.
8. If you removed the node from the rack, replace the node in the rack, as described in Replacing a node in a rack: 2145-SV1.
9. If you removed any Fibre Channel or Ethernet cables, use the labels on each cable to replace them in the same ports from which they were removed.
10. If the node fault LED comes on after you power on the 2145-SV1, then look for the node error code in the service assistant GUI through the technician port.
    1. If the node error is 543, then check which slots the boot drives appear to be in by using the boot drive information section of the service assistant GUI. If the boot drives appear to be in drive slots 5 and 6, then SATA 2 on the backplane is mistakenly connected to SATA 1 on the main board.