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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):
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NVDIMM sanitization policies
•
NVDIMM sanitization guidelines
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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
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The destination server blade hardware must match the original server blade hardware configuration.
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All System Utilities settings in the destination server blade must match the original System Utilities settings in the
original server blade.
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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.
•
Observe all DIMM and NVDIMM population guidelines. For more information, see DIMM and NVDIMM population
information.
•
Observe the process for removing an NVDIMM.
Removal and replacement procedures
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