Proxmox Backup Server vs BorgBackup

Proxmox Backup Server

BorgBackup

No individual plan breakdown documented yet.

Proxmox Backup Server

Pros

• Fully-featured free tier with unlimited storage and backup clients, not a crippled trial
• Efficient incremental-forever backups with client-side deduplication reduce storage costs
• Open-source under AGPLv3 with no vendor lock-in
• Tight, native integration with Proxmox Virtual Environment
• Subscription tiers differentiate by support level only, not by withholding features

Cons

• Official technical support requires a paid annual subscription per server
• Backup licensing costs can exceed Proxmox VE hypervisor licensing costs on the same infrastructure
• Best suited to organizations already using or willing to adopt Proxmox VE and the broader open-source stack
• Enterprise Repository access is gated behind a paid subscription, unlike the free no-subscription repository

BorgBackup

Pros

• Free and fully open source with no licensing cost
• Highly space-efficient thanks to content-defined deduplication
• Strong, well-audited client-side encryption
• Mature, stable, and actively maintained since 2015
• Works over plain SSH with almost any remote storage

Cons

• No official native Windows support (WSL only)
• Command-line only — no bundled graphical interface
• No managed cloud dashboard or centralized fleet management
• Steeper learning curve for non-technical users

Proxmox Backup Server

• Homelab and small IT teams needing free enterprise backup — Cost-conscious administrators run the no-subscription edition to get deduplicated, incremental-forever backups without licensing fees.
• Enterprises needing supported production backup infrastructure — Organizations running production Proxmox VE clusters purchase Standard or Premium subscriptions for guaranteed support response times.
• Regulated or air-gapped environments — Teams operating in secure or offline environments use offline subscription key activation available on Standard and Premium tiers.

BorgBackup

• Server & infrastructure backups — System administrators use Borg to run scheduled, deduplicated, encrypted backups of Linux servers to remote storage.
• Self-hosted home lab backups — Self-hosters back up NAS devices, home servers, and personal machines to another disk or a remote Borg-compatible host.
• Encrypted offsite archiving — Individuals and small teams push encrypted, space-efficient archives to third-party storage without trusting the storage provider with plaintext data.