Function Get-ShadowCopyInfo([string]$Computer,[string]$UserName,[string]$Password,[switch]$MB,[switch]$PromptForCredentials,[switch]$NoCredentials)
{
<#
.Synopsis
Get volume shadow copy information
.Description
Obtains volume shadow copy information for local and remote servers
.Parameter Computer
The name of the computer you wish to run the command against, default is LocalHost
.Parameter UserName
The UserName for any credentials you wish to pass
.Parameter Password
The Password for any credentials you wish to pass
.Parameter MB
Return stats in MB rather than GB
.Parameter PromptForCredentials
This will prompt you to enter credentials for the server, rather than passing in the data in plain text.
.Parameter NoCredentials
Forces the function to not use any credentials.
 
.Example
Get-ShadowCopyInfo
 
This will return information about the shadow copy data on localhost
.Example
Get-ShadowCopyInfo -Computer ServerA -UserName "MyDomain\MyUser" -Password "MyPassword"
 
This will return information about the shadow copy data on ServerA using the supplied credentials
.Example
Get-ShadowCopyInfo -Computer ServerA -PromptForCredentials
 
This will return information about the shadow copy data on ServerA, but will prompt you to enter credentials.
.Example
Get-ShadowCopyInfo -Computer ServerA -NoCredentials
 
This will return information about the shadow copy data on ServerA using no additional credentials.
.Example
Get-ShadowCopyInfo -MB
 
This will return data about the shadow copy volume on your computer, but return the stats in MB rather than GB.
 
.Notes
Name: Get-ShadowCopyInfo
Author: Peter Rossi
Last Edited: 26th May 2011
#>
 
	if(-not $UserName)
	{
		if(-not $Password)
		{
			If(-not $PromptForCredentials)
			{
				$NoCredentials = $True
			}
		}
	}
 
	if(-not $Computer)
	{
		$Computer = "LocalHost"
	}
	if(-not $NoCredentials)
	{
		if(-not $PromptForCredentials)
		{
			$SecPass = convertto-securestring -asplaintext -string $Password -force
			$Creds = new-object System.Management.Automation.PSCredential -argumentlist $UserName,$SecPass
		}
		Else
		{
			$Creds = Get-Credential 
		}
	}
 
	if(-not $NoCredentials)
	{
		$ShadowInfo = gwmi -Class win32_shadowstorage -ComputerName $Computer -Credential $Creds
		$VolumeInfo =  gwmi -Class win32_volume -ComputerName $Computer -Credential $Creds
	}
	Else
	{
		$ShadowInfo = gwmi -Class win32_shadowstorage -ComputerName $Computer
		$VolumeInfo =  gwmi -Class win32_volume -ComputerName $Computer
	}
 
	$Final = @()
	ForEach($Shadow in $ShadowInfo)
	{
		if(-not $MB)
		{
			$ARow = "" | Select Computer,Drive,SizeGB,ShadowMaxSizeGB,ShadowUsedSizeGB,ShadowPercent,TimeChecked
		}
		Else
		{
			$ARow = "" | Select Computer,Drive,SizeMB,ShadowMaxSizeMB,ShadowUsedSizeMB,ShadowPercent,TimeChecked
		}
		$ARow.Computer = $Computer
		$ARow.TimeChecked = Get-Date
 
		ForEach($Vol in $VolumeInfo)
		{
			If($Shadow.Volume -like "*$($Vol.DeviceId.trimstart("\\?\Volume").trimend("\"))*")
			{
				$ARow.Drive = $Vol.Name
				if($MB)
				{
					$ARow.SizeMB = "{0:N2}" -f ($Vol.Capacity/1024/1024)
					$ARow.ShadowMaxSizeMB = "{0:N2}" -f ($Shadow.MaxSpace/1024/1024)
					$ARow.ShadowUsedSizeMB = "{0:N2}" -f ($Shadow.UsedSpace/1024/1024)
				}
				Else
				{
					$ARow.SizeGB = "{0:N2}" -f ($Vol.Capacity/1024/1024/1024)
					$ARow.ShadowMaxSizeGB = "{0:N2}" -f ($Shadow.MaxSpace/1024/1024/1024)
					$ARow.ShadowUsedSizeGB = "{0:N2}" -f ($Shadow.UsedSpace/1024/1024/1024)
				}
				$Percent = ($Shadow.MaxSpace/$Vol.Capacity) * 100
				$ARow.ShadowPercent = [int]$Percent
 
			}
 
		}
 
		$Final += $ARow
 
 
	}
 
	Return $Final
 
 
}