计算当前Exchange 2010 数据库的用户使用情况

#edit by raymond xu,you can contact me by sending mail wusc@wscon.cn
param
(
 [Switch]$ExportMailboxSize,
 [Switch]$CompareMailboxSize,
 [String]$LogPath="C:\log",
 [String[]]$Identity,
 [DateTime]$StartDate,
 [DateTime]$EndDate
)
#region Export today's Mailbox Size
if ($ExportMailboxSize)
{
 $Counter=0
 $UserMailboxStatistics=@()
 if(-not ( Test-Path -Path $LogPath))
 {
  New-Item -ItemType  directory -Path $LogPath 
 } 
 #Get mailbox identity
 if (-not ($Identity))
 {
  $UserMailboxs=Get-Mailbox -Filter 'RecipientTypeDetails -eq "UserMailbox"' -ResultSize unlimited 
 }
 else
 {
  $UserMailboxs=$Identity|Get-Mailbox -Filter 'RecipientTypeDetails -eq "UserMailbox"' -ResultSize unlimited
 }
 #Get SamAccountName,DisplayName and MailboxTotalItemSize for specific users or all users with mailbox.
 foreach ($UserMailbox in $UserMailboxs)
 {
  $Counter++
  Write-Progress -Activity "Export MailboxStatistic" -Status "Exporting" -CurrentOperation $UserMailbox.DisplayName -PercentComplete ($counter/($UserMailboxs.Count)*100)

  $UserMailboxStatistic = New-Object PSObject
  $UserMailboxSizeB = (Get-MailboxStatistics -Identity $UserMailbox).TotalItemSize.Value.tobytes()
                $UserMailboxItem = (Get-MailboxStatistics -Identity $UserMailbox).itemcount
                $UserMailboxDeleteditem=(Get-MailboxStatistics -Identity $UserMailbox).deleteditemcount
                $UserMailboxDeletesizeB=(Get-MailboxStatistics -Identity $UserMailbox).TotalDeletedItemSize.Value.tobytes()
  $UserMailboxSizeMB = "{0:#.##}" -f ($UserMailboxSizeB/1mb)
                $UserMailboxDeletesizeMB="{0:#.##}" -f ($UserMailboxDeletesizeB/1mb)
                $usermailboxstatus=(Get-MailboxStatistics -Identity $UserMailbox).StorageLimitStatus
  $UserMailboxStatistic | Add-Member -MemberType NoteProperty -Name "SamAccountName" -Value $UserMailbox.SamAccountName
  $UserMailboxStatistic | Add-Member -MemberType NoteProperty -Name "DisplayName" -Value $UserMailbox.DisplayName
  $UserMailboxStatistic | Add-Member -MemberType NoteProperty -Name "UserMailboxSizeMB" -Value $UserMailboxSizeMB
                $UserMailboxStatistic | Add-Member -MemberType NoteProperty -Name "MailboxItemCount" -Value $UserMailboxItem
                $UserMailboxStatistic | Add-Member -MemberType NoteProperty -Name "MailboxDeleteditem" -Value $UserMailboxDeleteditem
                $UserMailboxStatistic | Add-Member -MemberType NoteProperty -Name "MailboxDeletedsize" -Value $UserMailboxDeletesizeMB
                $UserMailboxStatistic | Add-Member -MemberType NoteProperty -Name "Mailboxstatus" -Value $usermailboxstatus
  $UserMailboxStatistics+=$UserMailboxStatistic
 }
 #Output to a CSV file with date format "yyyy-MM-dd" as default name  ,in default path "C:\log". Path can be set by $logpath param.
 $UserMailboxStatistics|Export-Csv -Encoding default -NoTypeInformation -Path "$LogPath\$(get-date -Format "yyyy-MM-dd").csv"
}
#endregion

if (-not $ExportMailboxSize -and -not $CompareMailboxSize)
{
Write-Warning -Message "You did not choose any task. Please choose one."
}