hyperv-s3-backup.ps1

# Add to task scheduler
# Start a program; Powershell.exe -ExecutionPolicy Bypass -File "backupvm.ps1"
# Define variables
$VMName = "VM Name"
$ExportPath = "C:\backups"
$RarFileName = "vm-name"
$RarFileNameWithDate = "$RarFileName-$(Get-Date -Format 'yyyyMMdd-HHmmss')"
$S3Bucket = "hyperv-backup-s3"
$SNSArn = "arn:aws:sns:eu-west-1:xxxx:Backup"
$daysToKeep = 90
$currentDate = Get-Date
$WinRARExe = "C:\Program Files\WinRAR\rar.exe"
$RecoveryRecordSize = "5%"  # Set the desired percentage for the recovery record

try {
    # Export Hyper-V machine
    Export-VM -Name "$VMName" -Path "$ExportPath"

    # Change current working directory to export path
    Set-Location -Path $ExportPath
    # Compress with Rar
    $WinRARCommand = "& '$WinRARExe' a -rr$RecoveryRecordSize '${RarFileNameWithDate}.rar' '$VMName'"
    Invoke-Expression $WinRARCommand

    # Upload to S3 Glacier
    aws s3 cp "$ExportPath\${RarFileNameWithDate}.rar" "s3://$S3Bucket/${RarFileName}.rar"

    # List files in S3 bucket
    $S3FileList = aws s3 ls s3://$S3Bucket/

    # Send SNS notification for successful backup with file list
    $SNSMessage = "Backup of $VMName completed successfully. File: $ZipFileName.`nFiles in S3 Bucket:`n$S3FileList"
    aws sns publish --topic-arn $SNSArn --message "$SNSMessage"

    # Get all zip files older than 90 days
    $filesToDelete = Get-ChildItem -Path $ExportPath -Filter *.zip | Where-Object { $_.LastWriteTime -lt ($currentDate.AddDays(-$daysToKeep)) }
    foreach ($file in $filesToDelete) {
        Remove-Item $file.FullName -Force
        Write-Host "Deleted: $($file.FullName)"
    }
}
catch {
    # Handle S3 upload failure
    $ErrorMessage = $_.Exception.Message
    Write-Host "S3 Upload Failed: $ErrorMessage"
    
    # Send SNS notification for upload failure
    aws sns publish --topic-arn $SNSArn --message "S3 Upload of $VMName failed. Error: $ErrorMessage"
}
finally {
    # Clean up temporary files
    Remove-Item "$ExportPath\$VMName" -Recurse -Force
}