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Dell EMC NVDIMM-N Persistent Memory User Guide


Server BIOS restores NVDIMM-N DRAM data from its onboard Flash during boot time. BIOS verifies that the NVDIMM-N Battery is installed and has sufficient charge for a Save event in case of an power loss. BIOS also verifies that the installed server Power Supplies are sufficiently sized for the server configuration. This is to ensure that after an power loss, the PSUs are able to provide enough power to hold up the server until Battery power takes over. Once BIOS verifies that both the Battery and PSUs have enough power to support NVDIMM-Ns, BIOS arms the NVDIMM-Ns and allows the server to boot to OS.

If BIOS detects any issues, BIOS will display an F1/F2 error message on screen and lock the NVDIMM-N in Read-Only mode. OSes will still be able to read NVDIMM-N data at this time, but any changes will be discarded. To restore the NVDIMM-N to normal operation, the user must correct the issue and reboot the server. Please refer to Section BIOS Error Messages 4.2 BIOS Error Messages for more details.

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