Dell PowerEdge R740 EMC NVDIMM-N Persistent Memory User Guide - Page 8

Backup to Flash

Get Dell PowerEdge R740 PDF manuals and user guides View all Dell PowerEdge R740 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 8 highlights

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

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
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