$today = get-date

$todayu = get-date -format 'yyyyMMdd'

#备份DHCP数据库，用于还原到本地

Backup-DhcpServer -ComputerName dhcp1.uxin.youxinpai.com -Path C:\Windows\system32\dhcp\backup

#导出DHCP配置，恢复的时候，只用Import-DhcpServer即可，可以恢复到新DHCP服务器

Export-DhcpServer -ComputerName dhcp1.uxin.youxinpai.com -File C:\Backup\dhcp1_export_$todayu.xml

xcopy.exe /s /y C:\Backup\dhcp1_export_$todayu.xml \\192.168.200.249\D$\Backup\DHCP_Export\

xcopy.exe /s /y C:\Windows\system32\dhcp\backup \\192.168.200.249\D$\Backup\DHCP_Backup

#清除DHCP服务器的备份文件：删除早于14天的备份文件

$Files = Get-ChildItem –Path D:\Backup\DHCP_Backup

Foreach ($file in $Files)

{

 If (((get-date) - $file.lastwritetime).days -gt 14)

     {Remove-Item $file.Fullname -Force -Recurse}

}

$Files2 = Get-ChildItem –Path D:\Backup\DHCP_Export

Foreach ($file2 in $Files2)

{

 If (((get-date) - $file2.lastwritetime).days -gt 14)

     {Remove-Item $file2.Fullname -Force}

}