Users Guide
Table Of Contents
- Dell EMC NVDIMM-N Persistent Memory User Guide
- Introduction
- Change list
- NVDIMM-N Overview
- Hardware
- BIOS
- iDRAC NVDIMM-N Management
- Server Behavior with NVDIMM-Ns
- DIMM Configuration Changes
- Windows
- Linux
- ESXi
- General Errata
Figure 2. NVDIMM-N Normal Operation
Backup to Flash
In the event of a server shutdown, cold reboot, or power loss, a Save signal is sent to the NVDIMM-N Controller which then
triggers the NVDIMM-N Controller to backup all its DRAM contents to its onboard flash storage. The NVDIMM-N Save event
is triggered anytime the server is about to power down and power loss to NVDIMM-Ns is imminent. The backup process
takes approximately one minute to complete. This duration is independent of the number of NVDIMM-Ns installed in the server
because Saves occur in parallel across all NVDIMM-Ns.
A Battery provides backup power to the NVDIMM-N so that it can complete the backup operation even after an power
loss. When the Save operation is complete, the Battery is deactivated to allow the server and NVDIMM-Ns to power down
completely.
Figure 3. Save Operation
8
NVDIMM-N Overview