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Replacing the real-time clock battery

You replace the real-time clock (RTC) battery in the controller module so that your system’s services and applications that depend on accurate time synchronization continue to function.

About this task

  • You can use this procedure with all versions of ONTAP supported by your system.
  • All other components in the system must be functioning properly; if not, you must contact technical support.
  1. Workflow diagram
    This diagram shows the workflow of the RTC battery replacement procedure for a system.
  2. Shutting down the degraded controller
    You can shut down or take over the degraded controller using different procedures, depending on the storage system hardware configuration.
  3. Opening the system
    To access components inside the controller, you must first remove the controller module from the system and then remove the cover on the controller module.
  4. Replacing the RTC battery
    To replace the RTC battery, locate it inside the controller and follow the specific sequence of steps.
  5. Reinstalling the controller
    After you replace a component within the controller module, you must reinstall the controller module in the system chassis and boot it.
  6. Completing the replacement process
    After you replace the part, you can return the failed part to Lenovo, as described in the RMA instructions shipped with the kit. Contact technical support at Lenovo Data Center Support if you need the RMA number or additional help with the replacement procedure.