Cause
• Node interleaving is enabled.
• The current AMP mode is unsupported when NVDIMMs are installed.
• New NVDIMMs were installed on the compute module.
• The NVDIMM is installed in a slot that does not have backup power available.
Action
1. Review the IML for messages that may indicate the reason the NVDIMMs are disabled. Perform steps
stated in the error message.
For more information, see the error message guide for your compute module on the Hewlett Packard
Enterprise website (http://www.hpe.com/info/gen10-troubleshooting).
2. Ensure that all UEFI System Utility settings are configured to support NVDIMMs.
• If Node interleaving is enabled in UEFI System Utilities, change the setting to Disabled.
• If Advanced Memory Protection is set to any other setting than Advanced ECC Support, then
change the setting to Advanced ECC Support.
For more information, see the UEFI System Utilities user guide for your product on the Hewlett
Packard Enterprise website (http://www.hpe.com/info/uefi/docs).
3. If new NVDIMMs are installed on the compute module, sanitize the NVDIMMs to enable the NVDIMMs
for use.
For more information, see the HPE 16GB NVDIMM User Guide on the Hewlett Packard Enterprise
website (http://www.hpe.com/info/NVDIMM-docs).
4. Verify that your NVDIMM is installed in a slot that supports NVDIMMs. Move the NVDIMM to a slot that
supports NVDIMMs.
For more information, see the compute module maintenance and service guide.
5. Verify that a supported HPE Smart Storage Battery is properly installed and operating in the compute
module.
For a list of supported options, see the QuickSpecs on the Hewlett Packard Enterprise website (http://
www.hpe.com/info/qs).
The persistent memory drive does not appear in the OS
Symptom
When a persistent memory drive does not appear in the OS, this symptom usually indicates that the
underlying NVDIMM is mapped out.
Cause
Uncorrectable memory errors exist in the NVDIMM and address range scrubbing is not enabled.
Action
1. In UEFI System Utilities, set the Persistent Memory Address Range Scrub option to Enabled.
Hardware issues 45
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