Replacing a PCI express riser-card assembly: 2145-DH8

Use these instructions when you are prompted to replace a PCI express riser card assembly on a SAN Volume Controller 2145-DH8 node.

About this task

The SAN Volume Controller 2145-DH8 node has two PCI riser-card slots on the system board.

• The 2145-DH8 comes with two PCI Express riser-card assemblies installed.
• PCI riser slot 1  1  (the slot farther from the power supplies): You must install a PCI riser-card assembly in slot 1. See Figure 1.
• PCI riser slot 2  2  (the slot closer to the power supplies): You must install a PCI riser-card assembly in slot 2.
• Adapter cards in PCI riser slot 2 are usable only if microprocessor 2 is also fitted.

Figure 1. Replacing the 2145-DH8 PCI express riser card assembly

This service action assumes that the following conditions are met:

• 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 signal cables are disconnected.
• The top cover is removed.
• One or both PCI express rise-card assemblies are removed.

For the list of the expansion cards that are supported by each PCIe slot, see Optional features. Install any new PCIe expansion cards by gently pushing them into the correct PCIe slot.

1. Reinstall any adapters that were removed in the same slot.
2. Align the PCI riser-card assembly with the selected PCI connector on the system board.

   The chassis might sag after you remove the riser assembly. In this case, lift the bottom of the chassis to line up the slots on the side of the assembly to the alignment brackets in the side of the chassis.

   Notes:

   1. PCI connector 1: Carefully fit the two alignment slots on the side of the assembly onto the two alignment brackets in the side of the chassis.
   2. PCI connector 2: Carefully align bottom edge (the contact edge) of the riser-card with the riser-card connector on the system board.
3. Press down on the assembly and make sure that the riser-card assembly is fully seated in the riser-card connector on the system board.
4. Replace the 2145-DH8 cover.
5. Slide the 2145-DH8 into the rack.
6. Reconnect all signal cables to the same ports from which they were removed.