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Replacing the NVMEM battery

To replace an NVMEM battery in the system, you must remove the controller module from the system, open it, replace the battery, and close and reinstall the controller module.

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 NVMEM battery replacement procedure.
  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 NVMEM battery
    To replace the NVMEM battery in your system, you must remove the failed NVMEM battery from the system and replace it with a new NVMEM battery.
  5. Reinstalling the controller module
    After you replace components in the controller module, reinstall it into the chassis.
  6. Running system-level diagnostics
    After installing a new NVMEM battery, you should run diagnostics.
  7. 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.