https://takao.blog/en/tags/vzdump/Recent content in Vzdump on Commentary of TakaoHugo -- gohugo.ioenCommentary of TakaoSat, 13 Jun 2026 23:11:50 +0900https://takao.blog/en/web/proxmox-backup-disaster-recovery/Mon, 20 Jan 2025 00:00:00 +0000https://takao.blog/en/web/proxmox-backup-disaster-recovery/<img src="https://takao.blog/img/thumnail.webp" alt="Featured image of post Proxmox Backup Strategies: vzdump, PBS, and Disaster Recovery" /><p>Backups are not optional. Bit rot, accidental deletion, and ransomware all target hypervisor storage. Proxmox VE offers two backup paths: the built-in <code>vzdump</code> and the dedicated Proxmox Backup Server (PBS).</p> <h2 id="why-backup-matters">Why Backup Matters </h2><table> <thead> <tr> <th>Threat</th> <th>Impact</th> <th>Mitigation</th> </tr> </thead> <tbody> <tr> <td>Bit rot</td> <td>Silent single-bit corruption</td> <td>Integrity-verified (PBS)</td> </tr> <tr> <td>Accidental deletion</td> <td>VM lost instantly</td> <td>Retention + off-site</td> </tr> <tr> <td>Ransomware</td> <td>Encrypted disks</td> <td>Immutable off-site backups</td> </tr> </tbody> </table> <h2 id="vzdump-the-built-in-tool">vzdump: The Built-In Tool </h2><p>vzdump creates consistent backups of VMs and containers. For VMs, install the Qemu Guest Agent so vzdump can quiesce the filesystem before snapshotting:</p>