Dell EMC NVDIMM-N Persistent Memory User Guide

Interleave Setup

Press PowerOn button on the server

Follow the guidance in Section 4 to setup BIOS.

Enable the Persistence Memory, enable “NVDIMM Interleave”, disable “NVDIMM Read-Only”.

Install RHEL or start OS if it is already installed

When OS is up running,

$ su 

CPU0’s 6 NVDIMM-Ns show up as /dev/pmem0, CPU1’s 6 NVDIMM-Ns appear as /dev/pmem1.

# ls /dev/pmem*

View the size of /dev/pmem0 and /dev/pmem1, each should be around 6*16 GB = 96GB because each NVDIMM-N is 16 GB.

# lsblk  

Create xfs file system for /dev/pmem0 and /dev/pmem1

# mkfs.xfs /dev/pmem0

Create directory /mnt/nvdimm0 and /mnt/nvdimm1

# mkdir –p /mnt/nvdimm0 

Mount /dev/pmem0 and /dev/pmem1

# mount –t xfs –o dax /dev/pmem0 /mnt/nvdimm0

Save the mount point and option so that devices will be mounted on next reboot.

# echo "/dev/pmem0 /mnt/nvdimm0 xfs dax 0 0" >> /etc/fstab

Copy files to /mnt/nvdimm0 and /mnt/nvdimm1, then shutdown.

# echo “writing into nvdimm” >> /mnt/nvdimm0/write.txt 
# shutdown