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Replacing the boot media

The boot media stores a primary and secondary set of system (boot image) files that the system uses when it boots. Depending on your network configuration, you can perform either a nondisruptive or disruptive replacement.

Before you begin

You must have a USB flash drive, formatted to FAT32, with the appropriate amount of storage to hold the image_xxx.tgz.
  • The nondisruptive and disruptive methods for replacing a boot media both require you to restore the var file system:
    • For nondisruptive replacement, the HA pair must be connected to a network to restore the var file system.
    • For disruptive replacement, you do not need a network connection to restore the var file system, but the process requires two reboots.
  • You must replace the failed component with a replacement FRU component you received from your provider.
  • It is important that you apply the commands in these steps on the correct controller:
    • The degraded controller is the controller on which you are performing maintenance.
    • The healthy controller is the HA partner of the degraded controller.
  1. 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.
  2. Opening the controller module
    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.
  3. Replacing the boot media
    You must locate the boot media in the controller and follow the directions to replace it.
  4. Transferring the boot image to the boot media
    You can install the system image to the replacement boot media using a USB flash drive with the image installed on it. However, you must restore the var file system during this procedure.
  5. 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.