while ((Get-WMIObject Win32_LogicalDisk -filter "DeviceID='E:'"  | Select -ExpandProperty freespace)/1024/1024/1024 -lt 200){
$s=get-childitem E:\rezerv -name
$t=$s[0]
remove-item E:\rezerv\$t -recurse
}
$s=get-date -uformat "%y%m%d"
$t=get-date -uformat "%H-%M"
new-item -path E:\rezerv -name $s -type directory
copy-item "D:\130330\1.vhd" -destination "E:\rezerv\$s\vAlpha-3 $t.vhd"

$SourcePath = "D:\130330" 
$DestinationPath = "E:\rezerv"
$Format = "yyyyMMdd"
 
$CurentDate = Get-Date -DisplayHint Date
$CurentDirName = $CurentDate.ToString($Format)
$7days = new-timespan -days 7
 
Get-ChildItem $DestinationPath | `
Where-Object { ([DateTime]::ParseExact($_.Name, $Format, $null)) -lt ($CurentDate - $7days) } |` 
ForEach-Object { Remove-Item $_.FullName -force -Recurse }