• Clear: Overwrite user-addressable storage space using standard write commands; might not sanitize
data in areas not currently user-addressable (such as bad blocks and overprovisioned areas)
• Purge: Overwrite or erase all storage space that might have been used to store data using dedicated
device sanitize commands, such that data retrieval is "infeasible using state-of-the-art laboratory
techniques"
• Destroy: Ensure that data retrieval is "infeasible using state-of-the-art laboratory techniques" and
render the media unable to store data (such as disintegrate, pulverize, melt, incinerate, or shred)
The NVDIMM-N Sanitize options are intended to meet the Purge level.
For more information on sanitization for NVDIMMs, see the following sections in the HPE 16GB NVDIMM
User Guide on the Hewlett Packard Enterprise website (http://www.hpe.com/info/nvdimm-docs):
• NVDIMM sanitization policies
• NVDIMM sanitization guidelines
• Setting the NVDIMM-N Sanitize/Erase on the Next Reboot Policy
NIST SP800-88 Guidelines for Media Sanitization (Rev 1, Dec 2014) is available for download from the
NIST website (http://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-88r1.pdf).
NVDIMM relocation guidelines
Requirements for relocating NVDIMMs or a set of NVDIMMs when the data must be preserved
• The destination server blade hardware must match the original server blade hardware configuration.
• All System Utilities settings in the destination server blade must match the original System Utilities
settings in the original server blade.
• If NVDIMM-Ns are used with NVDIMM Interleaving ON mode in the original server blade, do the
following:
◦ Install the NVDIMMs in the same DIMM slots in the destination server blade.
◦ Install the entire NVDIMM set (all the NVDIMM-Ns on the processor) on the destination server
blade.
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 server blade.
◦ Relocate the NVDIMM-Ns to another server blade.
◦ Sanitize all NVDIMM-Ns on the new server blade 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 64.
• Observe all DIMM and NVDIMM population guidelines. For more information, see DIMM and NVDIMM
population information on page 60.
Hardware options installation 65
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