This is another old WMI function I have rewritten to use CIM instead. This one queries computers for memory information.

function Get-PhysicalMemory {
<#
.SYNOPSIS
Get information about the physical memory installed on a computer.
.DESCRIPTION
This function uses CIM to query one or more computer for physical memory information.
It will first try to connect using 'WSMAN' protocol, but will fall back to using 'DCOM' if
this fails.
.EXAMPLE
Get-PhysicalMemory
Will query the local computer for physical memory information.
.EXAMPLE
Get-PhysicalMemory Server01 -Credential domain/user01
Will try to query 'Server01' with the credentials of 'domain/user01'.
.OUTPUTS
PSObject
.NOTES
Author: Øyvind Kallstad
Date: 08.12.2014
Version: 1.0
#>
[CmdletBinding()]
param (
# Specifies the target computer. Enter a fully qualified domain name, NetBIOS name, or an IP address. When the remote computer is in a different domain than the local computer,
# the fully qualified domain name is required.
[Parameter(Position = 0, ValueFromPipeline, ValueFromPipelineByPropertyName)]
[ValidateNotNullorEmpty()]
[string[]] $ComputerName = $env:COMPUTERNAME,
# Specifies a user account that has permission to perform this action.
[Parameter()]
[System.Management.Automation.Credential()] $Credential = [System.Management.Automation.PSCredential]::Empty,
# Use this parameter to force the creation of a new CIM session. The default behaviour is to save the session and reuse it if possible.
[Parameter()]
[switch] $ForceNewCimSession
)
process {
foreach ($computer in $ComputerName) {
try {
# define hashtable for Test-WSMan properties
$wsmanProperties = @{
ComputerName = $computer
ErrorAction = 'SilentlyContinue'
}
if ($PSBoundParameters['Credential']){
$wsmanProperties.Authentication = 'Basic'
$wsmanProperties.Credential = $Credential
}
# check if wsman is responding
$wsmanTest = Test-WSMan @wsmanProperties
# based on whether the result of the wsman test, we decide on the protocol to use for the cim session
if (-not([string]::IsNullOrEmpty($wsmanTest))) {
$cimSessionOption = New-CimSessionOption Protocol Wsman
Write-Verbose 'Using protocol "Wsman"'
}
else {
$cimSessionOption = New-CimSessionOption Protocol Dcom
Write-Verbose 'Using protocol "Dcom"'
}
# define hashtable for cim session properties
$cimSessionProperties = @{
Name = $computer
ComputerName = $computer
SessionOption = $cimSessionOption
Verbose = $false
ErrorAction = 'Stop'
}
if ($PSBoundParameters['Credential']){ $cimSessionProperties.Credential = $Credential}
# first check to see if a cim session already exist, if so use this – if not, we create a new one
# if -ForceNewCimSession is used, always create a new cim session
if ((-not($cimSession = Get-CimSession Name $computer ErrorAction SilentlyContinue)) -or ($ForceNewCimSession)) {
Write-Verbose 'Creating new CIM session'
$cimSession = New-CimSession @cimSessionProperties SkipTestConnection
} else { Write-Verbose 'Using existing CIM session' }
# run query to get data
$physicalMemory = Get-CimInstance CimSession $cimSession Query 'SELECT BankLabel,Capacity,DataWidth,Description,DeviceLocator,FormFactor,InterleaveDataDepth,InterleavePosition,Manufacturer,MemoryType,PartNumber,PositionInRow,SerialNumber,Speed,Tag,TotalWidth,TypeDetail FROM Win32_PhysicalMemory' Verbose:$false ErrorAction Stop
foreach ($memory in $physicalMemory) {
switch($memory.FormFactor) {
'0' {$memoryFF = 'Unknown'}
'1' {$memoryFF = 'Other'}
'2' {$memoryFF = 'SIP'}
'3' {$memoryFF = 'DIP'}
'4' {$memoryFF = 'ZIP'}
'5' {$memoryFF = 'SOJ'}
'6' {$memoryFF = 'Proprietary'}
'7' {$memoryFF = 'SIMM'}
'8' {$memoryFF = 'DIMM'}
'9' {$memoryFF = 'TSOP'}
'10' {$memoryFF = 'PGA'}
'11' {$memoryFF = 'RIMM'}
'12' {$memoryFF = 'SODIMM'}
'13' {$memoryFF = 'SRIMM'}
'14' {$memoryFF = 'SMD'}
'15' {$memoryFF = 'SSMP'}
'16' {$memoryFF = 'QFP'}
'17' {$memoryFF = 'TQFP'}
'18' {$memoryFF = 'SOIC'}
'19' {$memoryFF = 'LCC'}
'20' {$memoryFF = 'PLCC'}
'21' {$memoryFF = 'BGA'}
'22' {$memoryFF = 'FPBGA'}
'23' {$memoryFF = 'LGA'}
DEFAULT {$memoryFF = 'Unknown'}
}
switch ($memory.MemoryType) {
'0' {$memoryType = 'Unknown'}
'1' {$memoryType = 'Other'}
'2' {$memoryType = 'DRAM'}
'3' {$memoryType = 'Synchronous DRAM'}
'4' {$memoryType = 'Cache DRAM'}
'5' {$memoryType = 'EDO'}
'6' {$memoryType = 'EDRAM'}
'7' {$memoryType = 'VRAM'}
'8' {$memoryType = 'SRAM'}
'9' {$memoryType = 'RAM'}
'10' {$memoryType = 'ROM'}
'11' {$memoryType = 'Flash'}
'12' {$memoryType = 'EEPROM'}
'13' {$memoryType = 'FEPROM'}
'14' {$memoryType = 'EPROM'}
'15' {$memoryType = 'CDRAM'}
'16' {$memoryType = '3DRAM'}
'17' {$memoryType = 'SDRAM'}
'18' {$memoryType = 'SGRAM'}
'19' {$memoryType = 'RDRAM'}
'20' {$memoryType = 'DDR'}
'21' {$memoryType = 'DDR-2'}
DEFAULT {$memoryType = 'Unknown'}
}
switch ($memory.InterleavePosition) {
'0' {$interleavePosition = 'NonInterleaved'}
'1' {$interleavePosition = 'First position' }
'2' {$interleavePosition = 'Second position'}
DEFAULT {$interleavePosition = 'unknown'}
}
$typeDetails = @()
if($memory.TypeDetail -band 1) {$typeDetails += 'Reserved'}
if($memory.TypeDetail -band 2) {$typeDetails += 'Other'}
if($memory.TypeDetail -band 4) {$typeDetails += 'Unknown'}
if($memory.TypeDetail -band 8) {$typeDetails += 'Fast-paged'}
if($memory.TypeDetail -band 16) {$typeDetails += 'Static column'}
if($memory.TypeDetail -band 32) {$typeDetails += 'Pseudo-static'}
if($memory.TypeDetail -band 64) {$typeDetails += 'RAMBUS'}
if($memory.TypeDetail -band 128) {$typeDetails += 'Synchronous'}
if($memory.TypeDetail -band 256) {$typeDetails += 'CMOS'}
if($memory.TypeDetail -band 512) {$typeDetails += 'EDO'}
if($memory.TypeDetail -band 1024){$typeDetails += 'Window DRAM'}
if($memory.TypeDetail -band 2048){$typeDetails += 'Cache DRAM'}
if($memory.TypeDetail -band 4096){$typeDetails += 'Nonvolatile'}
$output = [PSCustomObject] [Ordered] @{
ComputerName = $computer
BankLabel = $memory.BankLabel
Capacity = $memory.Capacity
CapacityMB = ($memory.Capacity/1mb)
DataWidth = $memory.DataWidth
Description = $memory.Description
DeviceLocator = $memory.DeviceLocator
FormFactor = $memoryFF
InterleaveDataDepth = $memory.InterleaveDataDepth
InterleavePosition = $interleavePosition
Manufacturer = $memory.Manufacturer
MemoryType = $memoryType
PartNumber = $memory.PartNumber
PositionInRow = $memory.PositionInRow
SerialNumber = $memory.SerialNumber
Speed = $memory.Speed
Tag = $memory.Tag
TotalWidth = $memory.TotalWidth
TypeDetails = $typeDetails -join ', '
}
$defaultProperties = @('ComputerName','BankLabel','DeviceLocator','CapacityMB','Speed','FormFactor','Manufacturer')
$defaultDisplayPropertySet = New-Object System.Management.Automation.PSPropertySet('DefaultDisplayPropertySet',[string[]]$defaultProperties)
$PSStandardMembers = [System.Management.Automation.PSMemberInfo[]]@($defaultDisplayPropertySet)
$output | Add-Member MemberType MemberSet Name PSStandardMembers Value $PSStandardMembers Force
Write-Output $output
Remove-Variable Name memoryFF,interleavePosition,typeDetails,memoryType ErrorAction SilentlyContinue
}
}
catch {
# if the connection fail we don't want to keep the session
Remove-CimSession Name $computer ErrorAction SilentlyContinue
Write-Warning "At line:$($_.InvocationInfo.ScriptLineNumber) char:$($_.InvocationInfo.OffsetInLine) Command:$($_.InvocationInfo.InvocationName), Exception: '$($_.Exception.Message.Trim())'"
}
}
}
}

2 comments

  1. Nice! Really fast on my laptop! I like how it catches the errors gracefully. A bit against the best practices that huge “try{}catch{}” block, but why follow these guidlines if it is only to be a *$¨!# in the but!? (I actually know the answer: It is to have a more precise error handeling, and specifically, to be able to use the finally{} scriptblock).

    I personally like to add a “Get-Credential” right after my credential variable when I use it. (But it will make it mandatory).
    [System.Management.Automation.Credential()] $Credential = (Get-credential)

    Great work!

    Like

  2. Thanks. Yeah, I tend to use large try-catch blocks. For me it’s enough that I catch any exceptions. If I’m working on a really complicated script, I’ll do it differently of course, but these functions are really just meant to do small things, so it works well I think.

    Like

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