Replacing an expansion canister

This topic describes how to replace an expansion canister.

Attention: Even though many of these components are hot-swappable, they are intended to be used only when your system is not active (no I/O operations). If your system is powered on and processing I/O operations, go to the management GUI and follow the fix procedures. Initiating the replacement actions without the assistance of the fix procedures can result in loss of data or loss of access to data.

Be careful when you are replacing the hardware components that are located in the back of the system that you do not inadvertently disturb or remove any cables that you are not instructed to remove.

Be aware of the following canister LED states:
  • If the power LED is on, do not remove an expansion canister unless directed to do so by a service procedure.
  • If the power LED is flashing or off, it is safe to remove an expansion canister. However, do not remove an expansion canister unless directed to do so by a service procedure.
Attention: Even if an expansion canister is powered off, it is still possible to lose data. Do not remove an expansion canister unless directed to do so by a service procedure.

To replace an expansion canister, perform the following steps:

  1. Read the safety information to which Preparing to remove and replace parts refers.
  2. Record which SAS cables are plugged into the specific ports of the expansion canister. The cables must be inserted back into the same ports after the replacement is complete; otherwise, the system cannot function properly.
  3. Disconnect the SAS cables for each canister.
  4. Grasp the handle between the thumb and forefinger.
    Note: Ensure that you are opening the correct handle. The handle locations for the node canisters and expansion canisters are slightly different.

    Handles for the upper and lower expansion canisters overlap each other. The handle with the finger grip on the left removes the upper canister (1). The handle with the finger grip on the right removes the lower canister (2).

    Figure 1. Rear of expansion canisters that shows the handles.
    This picture shows the handles on the rear of the expansion canisters.
  5. Squeeze them together to release the handle.
    Figure 2. Removing the canister from the enclosure
    This figure shows how to remove a canister from an enclosure.
  6. Pull out the handle to its full extension.
  7. Grasp canister and pull it out.
  8. Insert the new canister into the slot with the handle pointing towards the center of the slot. Insert the unit in the same orientation as the one that you removed.
  9. Push the canister back into the slot until the handle starts to move.
  10. Finish inserting the canister by closing the handle until the locking catch clicks into place. Make sure that the canister is firmly and correctly seated, otherwise this can lead to problems.
  11. Reattach the SAS cables.
Parent topic: Replacing an expansion canister