Backup

Incremental backups with deduplication using restic.

PRO Feature

Backup is available in DVS PRO plan.

Concept

Unlike archives (full snapshots), backups are:

• Incremental: Only changed data is transferred
• Deduplicated: Identical blocks stored once
• Versioned: Multiple snapshots over time
• Space-efficient: Typically 10-20% of full backup size

Quick Start

# Create backup
dvs backup create --storage backup

# List snapshots
dvs backup list --storage backup

# Restore
dvs backup restore --storage backup

Commands

Command	Description
dvs backup create	Create snapshot
dvs backup list	List snapshots
dvs backup restore	Restore snapshot
dvs backup prune	Remove old snapshots
dvs backup delete	Delete specific snapshot
Info & Stats	info, stats, check, config
Key Management	init-key, export-key, import-key

How It Works

1. First backup: Full data upload
2. Subsequent backups: Only changed blocks
3. Deduplication: Same content = same block ID
4. Encryption: All data encrypted before upload

Snapshot 1: [A][B][C][D][E]     100%
Snapshot 2: [A][B][C][F][E]     20% (only F changed)
Snapshot 3: [A][B][G][F][E]     20% (only G changed)