Nvdimm Relocation Guidelines; Recovering Restored Data From An Nvdimm-N Dram - HPE Synergy 480 Gen10 series Maintenance And Service Manual

NVDIMM relocation guidelines

Requirements for relocating NVDIMMs or a set of NVDIMMs 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 NVDIMM-Ns are used with NVDIMM Interleaving ON mode in the original compute module, do the
following:
◦ Install the NVDIMMs in the same DIMM slots in the destination compute module.
◦ Install the entire NVDIMM set (all the NVDIMM-Ns on the processor) on the destination compute
module.
This guideline would apply when replacing a system board due to system failure.
If any of the requirements cannot be met during NVDIMM relocation, do the following:
◦ Manually back up the NVDIMM-N data before relocating NVDIMM-Ns to another compute module.
◦ Relocate the NVDIMM-Ns to another compute module.
◦ Sanitize all NVDIMM-Ns on the new compute module before using them.
Requirements for relocating NVDIMMs or a set of NVDIMMs when the data does not have to be
preserved
If data on the NVDIMM-N or set of NVDIMM-Ns does not have to be preserved, then
• Move the NVDIMM-Ns to the new location and sanitize all NVDIMM-Ns after installing them to the new
location. For more information, see NVDIMM sanitization on page 42.
• Observe all DIMM and NVDIMM population guidelines. For more information, see DIMM and NVDIMM
population information on page 42.
• Observe the process for removing an NVDIMM.
• Observe the process for installing an NVDIMM.
• Review and configure the system settings for NVDIMMs. For more information, see Configuring the
compute module for NVDIMMs on page 44.

Recovering restored data from an NVDIMM-N DRAM

CAUTION:
Do not remove an NVDIMM when any LEDs on any NVDIMM in the system are illuminated. Removing
an NVDIMM when an LED is illuminated might cause a loss of data.
CAUTION:
Electrostatic discharge can damage electronic components. Be sure you are properly grounded before
beginning this procedure.
NVDIMM relocation guidelines 43