Persistent memory module relocation guidelines

Observe the relocation guidelines when doing the following:

  • When relocating persistent memory modules to another DIMM slot on the compute module.

  • When relocating persistent memory modules to another compute module.

  • When reinstalling persistent memory modules after replacing the compute module system board.

IMPORTANT:

When data must be preserved, Hewlett Packard Enterprise strongly recommends that you perform a manual backup of all user data on the persistent memory modules before changing the goal configuration or performing relocation procedures.

Requirements for relocating persistent memory modules or a set of persistent memory modules when the data must be preserved

  • The destination compute module hardware must match the original compute module hardware configuration.
  • All System Utilities settings in the destination compute module must match the original System Utilities settings in the original compute module.
  • If persistent memory modules are used with Persistent Memory Interleaving set to Enabled in the original compute module, do the following:

    • Install the persistent memory modules in the same DIMM slots in the destination compute module.

    • Install the entire interleaved set (all the DIMMs and persistent memory modules on the processor) on the destination compute module.

    If any of the requirements cannot be met during relocation, do the following:

    • Manually back up the persistent memory data before relocating persistent memory modules to another compute module.

    • Relocate the persistent memory modules to another compute module.

    • Sanitize all persistent memory modules on the new compute module before using them.

Requirements for relocating encrypted persistent memory modules or a set of persistent memory modules when the data must be preserved

  • If persistent memory modules are encrypted with local key management, either manually retrieve the persistent memory module passwords from the compute module (user-generated passwords only) or export a password file to a USB key.

    Hewlett Packard Enterprise recommends exporting the password file to a USB key.

  • Follow the requirements for relocating persistent memory modules or a set of persistent memory modules when the data must be preserved.

  • Do one of the following:

    • If persistent memory modules are encrypted with local key management, either manually enter the persistent memory module passwords in the System Utilities or import the password file from the USB key.

    • If persistent memory modules are encrypted with remote key management, enroll the HPE iLO in the key management server to provide access to the data on the persistent memory modules.

    For more information, see the Intel Optane persistent memory 200 series for HPE User Guide on the Hewlett Packard Enterprise website (https://www.hpe.com/info/persistentmemory-docs).

Requirements for relocating persistent memory modules or a set of persistent memory modules when the data does not have to be preserved

  • Move the persistent memory modules to the new location and sanitize all persistent memory modules after installing them to the new location.
  • Observe the DIMM and persistent memory module population guidelines.
  • Observe the process for removing a persistent memory module.
  • Observe the process for installing a persistent memory module.
  • Review and configure the system settings for Intel Optane persistent memory for HPE.

For more information, see the Intel Optane persistent memory 200 series for HPE User Guide on the Hewlett Packard Enterprise website (https://www.hpe.com/info/persistentmemory-docs).