用于创建新的备份策略或修改当前系统状态备份策略的 PowerShell 脚本

此脚本可帮助你为受 MARS 代理保护的服务器创建新的备份策略或修改当前系统状态备份策略集。

<#

.SYNOPSIS
Modify system state policy

.DESCRIPTION
Modify system state policy

.ROLE
Administrators

#>
param (
    [Parameter(Mandatory = $true)]
    [string[]]
    $daysOfWeek,
    [Parameter(Mandatory = $true)]
    [string[]]
    $timesOfDay,
    [Parameter(Mandatory = $true)]
    [int]
    $weeklyFrequency,

    [Parameter(Mandatory = $false)]
    [int]
    $retentionDays,

    [Parameter(Mandatory = $false)]
    [Boolean]
    $retentionWeeklyPolicy,
    [Parameter(Mandatory = $false)]
    [int]
    $retentionWeeks,

    [Parameter(Mandatory = $false)]
    [Boolean]
    $retentionMonthlyPolicy,
    [Parameter(Mandatory = $false)]
    [int]
    $retentionMonths
)
Set-StrictMode -Version 5.0
$env:PSModulePath = (Get-ItemProperty -Path 'HKLM:\System\CurrentControlSet\Control\Session Manager\Environment' -Name PSModulePath).PSModulePath
Import-Module MSOnlineBackup
$ErrorActionPreference = "Stop"
Try {
    $oldPolicy = Get-OBSystemStatePolicy
    if ($oldPolicy) {
        return
    }
    $policy = New-OBPolicy
    $policy = Add-OBSystemState -Policy $policy

    $timesOfDaySchedule = @()
    foreach ($time in $timesOfDay) {
        $timesOfDaySchedule += ([TimeSpan]$time)
    }
    $daysOfWeekSchedule = @()
    foreach ($day in $daysOfWeek) {
        $daysOfWeekSchedule += ([System.DayOfWeek]$day)
    }

    $schedule = New-OBSchedule -DaysOfWeek $daysOfWeekSchedule -TimesOfDay $timesOfDaySchedule -WeeklyFrequency $weeklyFrequency
    if ($daysOfWeekSchedule.Count -eq 7) {
        if ($retentionWeeklyPolicy -and $retentionMonthlyPolicy) {
            $retention = New-OBRetentionPolicy -RetentionDays $retentionDays -RetentionWeeklyPolicy:$true -WeekDaysOfWeek $daysOfWeekSchedule -WeekTimesOfDay $timesOfDaySchedule -RetentionWeeks $retentionWeeks -RetentionMonthlyPolicy:$true -MonthDaysOfWeek $daysOfWeekSchedule -MonthTimesOfDay $timesOfDaySchedule -RetentionMonths $retentionMonths
        }
        elseif ($retentionWeeklyPolicy) {
            $retention = New-OBRetentionPolicy -RetentionDays $retentionDays -RetentionWeeklyPolicy:$true -WeekDaysOfWeek $daysOfWeekSchedule -WeekTimesOfDay $timesOfDaySchedule -RetentionWeeks $retentionWeeks
        }
        elseif ($retentionMonthlyPolicy) {
            $retention = New-OBRetentionPolicy -RetentionDays $retentionDays -RetentionMonthlyPolicy:$true -MonthDaysOfWeek $daysOfWeekSchedule -MonthTimesOfDay $timesOfDaySchedule -RetentionMonths $retentionMonths
        }
        else {
            $retention = New-OBRetentionPolicy -RetentionDays $retentionDays
        }
    }
    else {
        if ($retentionWeeklyPolicy -and $retentionMonthlyPolicy) {
            $retention = New-OBRetentionPolicy -RetentionWeeklyPolicy:$true -WeekDaysOfWeek $daysOfWeekSchedule -WeekTimesOfDay $timesOfDaySchedule -RetentionWeeks $retentionWeeks -RetentionMonthlyPolicy:$true -MonthDaysOfWeek $daysOfWeekSchedule -MonthTimesOfDay $timesOfDaySchedule -RetentionMonths $retentionMonths
        }
        elseif ($retentionWeeklyPolicy) {
            $retention = New-OBRetentionPolicy -RetentionWeeklyPolicy:$true -WeekDaysOfWeek $daysOfWeekSchedule -WeekTimesOfDay $timesOfDaySchedule -RetentionWeeks $retentionWeeks
        }
        elseif ($retentionMonthlyPolicy) {
            $retention = New-OBRetentionPolicy -RetentionMonthlyPolicy:$true -MonthDaysOfWeek $daysOfWeekSchedule -MonthTimesOfDay $timesOfDaySchedule -RetentionMonths $retentionMonths
        }
    }
    Set-OBSchedule -Policy $policy -Schedule $schedule
    Set-OBRetentionPolicy -Policy $policy -RetentionPolicy $retention
    Set-OBSystemStatePolicy -Policy $policy -Confirm:$false
}
Catch {
    if ($error[0].ErrorDetails) {
        throw $error[0].ErrorDetails
    }
    throw $error[0]
}

1. 使用所选名称和 .ps1 扩展名将上述脚本保存在计算机上。
2. 通过提供以下参数来执行脚本：
   备份计划和备份需要保留的天数/周数/月数或年数。

详细了解如何使用 PowerShell 通过 MARS 代理部署和管理本地备份。