Place controller shelf offline

You must place the controller shelf offline so you can safely add the HICs. You must back up the configuration and collect support data first. Then, you can take the controller shelf offline.

Before you begin


  1. From the Home of SANtricity System Manager, ensure that the storage array has Optimal status.

    If the status is not Optimal, use the Recovery Guru or contact technical support to resolve the problem. Do not continue with this procedure.

  2. Collect support data for your storage array using SANtricity System Manager.
    1. Select Support > Support Center > Diagnostics.
    2. Select Collect Support Data.
    3. Click Collect.

    The file is saved in the Downloads folder for your browser with the name support-data.7z.

  3. Ensure that no I/O operations are occurring between the storage array and all connected hosts. For example, you can perform these steps:
    • Stop all processes that involve the LUNs mapped from the storage to the hosts.
    • Ensure that no applications are writing data to any LUNs mapped from the storage to the hosts.
    • Unmount all file systems associated with volumes on the array.
    Note: The exact steps to stop host I/O operations depend on the host operating system and the configuration, which are beyond the scope of these instructions. If you are not sure how to stop host I/O operations in your environment, consider shutting down the host.
    Attention: Possible data loss – If you continue this procedure while I/O operations are occurring, the host application might lose access to the data because the storage is not accessible.
  4. Wait for any data in cache memory to be written to the drives.
    The green Cache Active LED on the back of each controller is on when cached data needs to be written to the drives. You must wait for this LED to turn off.
  5. From the Home page of SANtricity System Manager, select View Operations in Progress. Wait for all operations to complete before continuing with the next step.
  6. Power down the controller shelf.
    1. Label and then unplug both power cables from controller shelf.
    2. Wait for all LEDs on the controller shelf to turn off.

After you finish

Go to Remove controller canister