Removing and replacing the node canister in the node: 2145-SV2 and 2145-SA2

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To access or replace some components during service procedures, the node canister might need to be removed from, and reinserted into, the node.

About this task

Note: This topic provides instructions for removing and replacing the node canister and should only be used when instructed by other service procedures.

To replace a faulty node canister with one from FRU stock, follow the procedure that is described in Removing and replacing a faulty node canister: SAN Volume Controller 2145-SV2 and 2145-SA2.

Keep these items in mind when you do this task:
  • No tools are required to complete this task. Do not remove or loosen any screws.
  • Before the node canister can be removed, it must be powered off or be in service state; otherwise, loss of data or loss of access to data can result.
  • Use care when removing the node canister from the node. The node canister is long and its center of gravity is far forward. When removing the node canister from the node, it can be helpful to have a lift or other sturdy, flat surface ready to receive the node canister during removal.
  • Use care when lifting and inserting a new node canister from FRU stock.
    CAUTION:
    This part or unit is heavy but has a weight smaller than 18 kg (39.7 lb). Use care when lifting, removing, or installing this part or unit. (C008)

To remove and replace the node canister in the node, complete the following steps:

Procedure

  1. Shut down the node by using the service assistant. Follow the steps in Procedure: Powering off the node canister: 2145-SV2 and 2145-SA2.
  2. Use the LED indicators on the node canister to confirm that it is safe to remove it from the node, as described in Procedure: Understanding the system status from the LEDs: 2145-SV2 and 2145-SA2.
  3. Record which data cables are plugged into the specific ports on the rear of the node canister. The cables must be inserted back into the same ports after the replacement is complete; otherwise, the system cannot function properly.
  4. Disconnect the data cables that are connected to the node canister.

Removing the node canister

  1. Locate the blue left and right release levers for the node canister.

    The release levers are at the bottom of the node. The release lever is labeled with the serial number of the node canister to help with identification.

  2. Pull the left and right levers by the blue ends so that they both unlatch and swing outwards.
  3. Use the release levers to slowly pull the node canister and partially extract it from the node.
    Warning: The node canister is long and heavy. You might require the use of a lifting platform or other nearby surface to service the node canister. Observe safe handling practices as you complete the following steps:
  4. Hold the node canister by its sides so that it is level and its weight is balanced. Then, slide the node canister out of the node.
  5. Place the node canister on a flat, level surface for servicing, with its lid facing up.

Replacing the node canister

  1. Ensure that both of the canister release levers are in the open position.
  2. Push the node canister into the node, ensuring that both release levers engage with the canister and begin to close.
  3. Press the release levers closed to fully engage the canister into the node. Press the latch ends to ensure that the latches are engaged with the node.
  4. Reconnect all cables that were removed from the back of the node canister.
  5. Power on the node canister.
    If the canister does not begin to power up, check that it is fully inserted into the node. If necessary, remove the power and cables; then, repeat steps 10 through 12.