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Dell EMC NVDIMM-N Persistent Memory User Guide

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PowerShell Cmdlets

#Get-PmemDisk
  • Returns one or more logical persistent memory disks.
  • The returned object has information about size, atomicity type, health status, and underlying physical devices.
#Get-PmemPhysicalDevice
  • Returns one or more physical persistent memory devices (NVDIMMs).
  • The returned object has information about size(s), RFIC, device location, and health/operational status.
#New-PmemDisk
  • Creates a new disk out of a given unused region.
  • Writes out the labels to create the namespace then rebuilds the SCM stacks to expose the new logical device.
  • Optional parameters:
    • FriendlyName gives the persistent memory disk a friendly name. Default is "PmemDisk<N>"
    • AtomicityType lets you set BTT. Default is "none"
#Remove-PmemDisk
  • Removes the given persistent memory disk. It accepts the output of Get-PmemDisk.
  • Deletes the namespace’s labels and then rebuilds the SCM stacks to remove the logical device.
  • Requires user confirmation, which can be overridden with -Force.
#Get-PmemUnusedRegion
  • Returns aggregate pmem regions available for provisioning a logical device.
  • Returned object has a unique region ID, total size, and list of physical devices that contribute to the unused region
#Initialize-PmemPhysicalDevice
  • Writes zeroes to the label storage area, writes new label index blocks, and then rebuilds the SCM [Storage class memory] stacks to reflect the changes.
  • Requires user confirmation, which can be overridden with -Force.
  • This cmdlet is intended as a "big hammer" recovery mechanism. It is not recommended for normal use.

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