Proxmox Backup Server

Proxmox Backup Server (short PBS) is an open-source, enterprise backup solution supporting virtual machines, containers, and physical hosts.[3] The server is a bare-metal solution based on the Debian GNU/Linux distribution, with some extended features, such as out-of-the-box ZFS support and Linux kernel 5.4 LTS.[4] Proxmox Backup Server is licensed under the GNU Affero General Public License, version 3.[5]

Proxmox Backup Server
DeveloperProxmox Server Solutions GmbH
Written inRust[1]
OS familyUnix-like
Working stateCurrent
Source modelFree and open source software
Initial release11 November 2020 (2020-11-11)
Latest release1.0[2] / November 11, 2020 (2020-11-11)
Update methodAPT
Package managerdpkg
PlatformsAMD64
UserlandGNU
Default user interfaceWeb-based
LicenseGNU Affero General Public License v3.0
Official websitepbs.proxmox.com

Technology

Proxmox Backup Server is written mostly in Rust (programming language)[6] and implements data deduplication to reduce the storage space needed.[7] Data is split into chunks.[8]

History

Development of Proxmox Backup originally began in October 2018 with the need to provide a more efficient backup solution for the virtualization platform Proxmox Virtual Environment than the integrated vzdump backup tool which only allows full backups. The idea was to produce a quicker and more space-efficient solution. In July 2020, the first public beta was announced. Following this, its first stable release was announced in November, 2020.[9]

Operation

Proxmox Backup uses a client-server model and includes features that are targeted towards security and efficiency. It supports incremental backups, data deduplication, Zstandard compression and authenticated encryption (AE).[3] The backup server storing the backup data provides an API to create and manage datastores. A client tool allows to create and manage backups from all the hosts.[2]

For the Proxmox VE platform, the Proxmox Backup client is tightly integrated; the backup storage is configurable as a storage backend on a Proxmox VE node and supports deduplicated backups of QEMU virtual machines and containers.[10] The platform also leverages QEMU dirty-bitmaps, which allows for fast backups from the Proxmox VE client to the server, as only the changed data is transmitted. [11]

Backups can be stored on-premise or synchronized to remote locations with Remotes,[12] and multiple, unrelated hosts can use the same backup server. All client-server traffic is transferred over TLS-1.3 to protect against eavesdropping. To further protect backup data at rest, optional encryption of all backed-up-data is available using AES-256 in Galois/Counter Mode.[13] As the backup server can not access the backup data without the matching encryption keys, it can even be an untrusted host. Administration is done with the command-line tool or with the integrated web-based management interface. Proxmox Backup Server also provides a REST API for third party tools.

References
  1. "Proxmox Backup Server and Client Git Tree". Retrieved 18 December 2020.
  2. "Proxmox Backup Server 1.0 available". Proxmox. Proxmox Server Solutions. 2020-11-11. Retrieved 2020-12-21.
  3. Nestor, Marius. "Meet Proxmox Backup Server, a Debian-Based Open Source Enterprise Backup Solution". 9to5Linux. 9to5Linux. Retrieved 21 December 2020.
  4. Plura, Michael (13 November 2020). "Backup Server 1.0: Proxmox und ZFS absichern" [Backup Server 1.0: Securing Proxmox and ZFS]. heise online (in German). Heinz Heise. Retrieved 21 December 2020.
  5. "Proxmox Backup Server". Proxmox Server Solutions GmbH. Retrieved 21 December 2020.
  6. Thommes, Ferdinand (12 November 2020). "Proxmox erweitert Angebot mit Backup-Server" [Proxmox extends offer with backup server]. linuxnews.de (in German). Retrieved 21 December 2020.
  7. Legrand, David (12 November 2020). "Proxmox Backup Server est disponible en version 1.0" [Proxmox Backup Server available in version 1.0]. InpactHardware (in French). Retrieved 21 December 2020.
  8. "Backup Content". Proxmox Backup Documentation. Proxmox Server Solutions GmbH. 11 November 2020. Retrieved 21 December 2020.
  9. "Introduction - History". Proxmox Backup Documentation. Proxmox Server Solutions GmbH. 11 November 2020. Retrieved 21 December 2020.
  10. "Roadmap Proxmox Backup". Project page of the Proxmox Backup. Proxmox Server Solutions. Retrieved 21 December 2020.
  11. Smith, Lyle (26 November 2020). "Proxmox VE 6.3 Now Available". StorageReview.com. Flying Pig Ventures, LLC. Retrieved 21 December 2020.
  12. Cinar, Seda (14 November 2020). "Proxmox Backup Server 1.0 released". Retrieved 21 December 2020.
  13. De Luz, Sergio (15 November 2020). "¿Necesitas hacer backups profesionales? Proxmox Backup Server es tu solución" [Do you need to make professional backups? Proxmox Backup Server is your solution]. RedesZone.net (in Spanish). Grupo ADSLZone. Retrieved 21 December 2020.
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