Replacing the E2800 controller

You might need to replace the E2800 controller if it is not functioning optimally or if it has failed.

Before you begin

About this task

You can determine if you have a failed controller canister in two ways:
  • The Recovery Guru in SANtricity System Manager directs you to replace the controller.
  • The amber Attention LED on the controller is on, indicating that the controller has a fault.

The appliance Storage Node will not be accessible when you replace the controller. If the E2800 controller is functioning sufficiently, you can shut down the E5700SG controller before replacing the E2800 controller.

When you replace a controller, you must remove the battery from the original controller and install it in the replacement controller.

Note: The E2800 controller in the appliance does not include a host interface card (HIC), so you can skip those instructions in the E2800 controller replacement procedure.

Steps

  1. Follow the instructions in the E2800 controller replacement procedure to prepare to remove the controller.
    You use SANtricity System Manager to perform these steps.
    1. Make a note of which version of SANtricity OS software is currently installed on the controller.
    2. Make a note of which version of NVSRAM is currently installed.
    3. If the Drive Security feature is enabled, be sure a saved key exists and that you know the pass phrase required to install it.
      Attention: Possible loss of data access – If all drives in the appliance are security enabled, the new controller will not be able to access the appliance until you unlock the secured drives using the Enterprise Management Window in SANtricity Storage Manager.
    4. Back up the configuration database.
      If a problem occurs when you remove a controller, you can use the saved file to restore your configuration.
    5. Collect support data for the appliance.
      Note: Collecting support data before and after replacing a component ensures you can send a full set of logs to technical support in case the replacement does not resolve the problem.
  2. If the E2800 controller is functioning sufficiently to allow for a controlled shutdown, shut down the E5700SG controller.
    1. From the service laptop, log in to the grid node:
      1. Enter the following command: ssh admin@grid_node_IP
      2. Enter the password listed in the Passwords.txt file.
      3. Enter the following command to switch to root: su -
      4. Enter the password listed in the Passwords.txt file.
      When you are logged in as root, the prompt changes from $ to #.
    2. Stop all StorageGRID Webscale services:/etc/init.d/servermanager stop
    3. Shut down the E5700SG controller:shutdown -h now
    4. Wait for any data in cache memory to be written to the drives.
      The green Cache Active LED on the back of the E2800 controller is on when cached data needs to be written to the drives. You must wait for this LED to turn off.
  3. If the E2800 controller is functioning sufficiently to allow for a controlled shutdown, turn off the power.
    1. From the home page of SANtricity System Manager, select View Operations in Progress.
    2. Confirm that all operations have completed.
    3. Turn off both power switches on the appliance.
    4. Wait for all LEDs on the appliance to turn off.
  4. Follow the instructions in the replacement procedure for a simplex E2800 controller to complete these steps:
    1. Label the cables and then disconnect the cables and SFPs.
      Attention: To prevent degraded performance, do not twist, fold, pinch, or step on the cables.
    2. Remove the failed controller from the appliance.
    3. Remove the controller cover.
    4. Confirm that the green LED between the battery and the DIMMs is off.
      Attention: If this green LED is on, the controller is still using battery power. You must wait for this LED to go off before removing any components.
    5. Remove the battery from the failed controller.
    6. Install the battery in the replacement controller, and replace the controller cover.
    7. Install the replacement controller into the appliance.
    8. Replace the cables and SFPs.
    9. Determine how you will assign an IP address to the replacement controller.
      Note: The steps for assigning an IP address to the replacement controller depend on whether you connected management port 1 to a network with a DHCP server and on whether all drives are secured.
      • If management port 1 is connected to a network with a DHCP server, the new controller will obtain its IP address from the DHCP server. This value might be different than the original controller's IP address.
      • If all drives are secured, you must use the Enterprise Management Window (EMW) in SANtricity Storage Manager to unlock the secured drives. You cannot access the new controller until you unlock the drives with the saved key. See the simplex E2800 controller replacement procedure.
  5. If the appliance uses secured drives, follow the instructions in the E2800 controller replacement procedure to import the drive security key.
  6. Power on the appliance and monitor the controller LEDs and seven-segment displays.
    After the controllers have successfully booted up, the seven-segment displays should show the following:
    • E2800 controller:

      The final state is 99.

    • E5700SG controller:

      The final state is HA.

  7. Confirm that the new controller is Optimal, and collect support data.