initial commit

Backup_DB_Keyvi.ps1

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+$Server        = ".\KEYVI"
+$Database      = "DB_Keyvi"
+$BackupRoot    = "D:\SQLBackup\DB_Keyvi"
+$RetentionDays = 365
+
+$now   = Get-Date
+$year  = $now.ToString("yyyy")
+$month = $now.ToString("MM")
+
+# Zielordner: D:\SQLBackup\DB_Keyvi\YYYY\MM\
+$BackupDir = Join-Path (Join-Path $BackupRoot $year) $month
+New-Item -ItemType Directory -Path $BackupDir -Force | Out-Null
+
+# Dateiname: DB_Keyvi_yyyyMMdd_HHmmss.bak
+$timestamp  = $now.ToString("yyyyMMdd_HHmmss")
+$BackupFile = Join-Path $BackupDir ("{0}_{1}.bak" -f $Database, $timestamp)
+
+# Backup
+$sql = "BACKUP DATABASE [$Database] TO DISK = N'$BackupFile' WITH CHECKSUM, STATS = 10;"
+sqlcmd -S $Server -E -C -Q $sql
+if ($LASTEXITCODE -ne 0) { exit $LASTEXITCODE }
+
+# Alte Backups löschen
+$cutoff = (Get-Date).AddDays(-$RetentionDays)
+Get-ChildItem -Path $BackupRoot -Recurse -File -Filter "*.bak" |
+  Where-Object { $_.LastWriteTime -lt $cutoff } |
+  Remove-Item -Force
+
+# Leere Ordner löschen (von unten nach oben)
+Get-ChildItem -Path $BackupRoot -Recurse -Directory |
+  Sort-Object FullName -Descending |
+  ForEach-Object {
+    if (-not (Get-ChildItem -Path $_.FullName -Force | Select-Object -First 1)) {
+      Remove-Item -Path $_.FullName -Force
+    }
+  }
+
+exit 0