Replacing servers

ThinkAgile SXM solutions require specific configuration of the HLH and scale unit nodes. Use the following tips to help ensure successful server replacement.

HLH system replacement

When replacing the HLH system, do the following:
  1. If Lenovo XClarity Administrator is still accessible, unmanage all Azure Stack Hub scale unit nodes and network switches.

  2. If the HLH OS is still accessible, copy the D:\lenovo folder to a USB thumb drive for restoration.

  3. After replacing the HLH hardware, ensure that the firmware level and UEFI settings are configured according to the ThinkAgile SXM Best Recipe. See Firmware maintenance and Best Recipe for more information.

  4. Apply all platform security settings.

  5. Configure the IMM or XCC IPv4 address according to the worksheet generated during the initial deployment.

  6. Reconfigure the Supervisor-level account.

  7. Remove the default USERID account from the IMM or XCC.

  8. If available, copy the files from the backup USB thumb drive (from step 2 above) to D:\Lenovo on the replacement HLH system.

  9. Reinstall Lenovo XClarity Administrator. See Appendix A: XClarity Administrator deployment and configuration.

Azure Stack Hub scale unit node replacement

When replacing an Azure Stack Hub scale unit node , do the following:
  1. If the system is still responsive, use the Azure Stack Hub Administrator Portal to Drain the scale unit node that will be replaced.
  2. In LXCA, unmanage the node.

  3. Replace the scale unit node hardware.

  4. Reconnect the network and power cables.

  5. Configure the IMM/XCC IPv4 address according to the worksheet generated during the initial deployment.

  6. Reconfigure the Supervisor-level account on the IMM/XCC to be managed by LXCA using the same credentials currently used for the other nodes.

  7. Remove the default USERID account from the IMM/XCC.

  8. Ensure that the firmware levels on the replacement node are configured according to the ThinkAgile SXM Best Recipe that is currently in use for the solution.

    See Firmware maintenance and Best Recipe for more information.

  9. Use Lenovo XClarity Administrator to apply the Microsoft Azure Stack Hub pattern UEFI settings. See Import and apply server pattern for more information.

  10. Configure the boot volume as a RAID-1 mirror.