AR1 Backup
AR1 Backup lets a Fabric server create world backups on demand or on a timer, with optional ZIP encryption and a free-space guard.
What it does
Backups can be started by a command or the F7 hotkey, which is rebindable, or run automatically at an interval set between 1 and 120 minutes. The backup destination defaults to the game folder, and a custom absolute or relative path can be set instead. Retention is handled by a backup count limit from 5 to 30 and a retention time from 1 to 30 days, so old copies are removed without manual work.
The mod is server-side only, so players join without installing anything and only the server needs it. It requires Cloth Config API, Fabric API and Mod Menu. Files are published for Fabric only, across six release versions 1.21.11 – 26.3, with 10.0.3 for 26.1.2 as the latest file. The code is all rights reserved and not open source.
Key features
Automatic and manual backups
Backups run on a configurable schedule or are started by hand, using a command or the rebindable F7 hotkey.
Smart cleanup
Limits on backup count and retention time remove older archives, keeping storage use within a chosen bound.
Free space check
A backup is skipped when free disk space would fall below a threshold set between 1 and 10 GB.
Compression and progress
Compression level from 0 to 9 and a thread count from 1 to 8 can be tuned, with animated progress shown in the action bar or subtitle.
Encrypted ZIP archives
Selected backups can be written as password-protected ZIP files encrypted with AES-256.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 3
Use cases
Who it’s for: Server owners who want scheduled or on-demand world copies with retention limits and optional encryption. Players who only join a server do not need the mod.
How it compares
Backup Always Right is server-side only, open source under the MIT License and published for 1.21.1 – 26.2. Better World Backup needs both client and server, is all rights reserved and covers 1.21 – 26.3. Just Enough Backups (JEB) is open source under the MIT License for 1.21 – 26.3 and is optional on either side. Easy backups is server-side only, under the Apache License 2.0, and targets 1.21.10 only.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| AR1 Backup | Fabric | 1.21.11 – 26.3 | Server-side only | 2026-09-25 |
| Backup Always Right | Fabric | 1.21.1 – 26.2 | Server-side only | 2026-07-26 |
| Better World Backup | Fabric | 1.21 – 26.3 | Client and server | 2026-10-07 |
| Just Enough Backups (JEB) | Fabric | 1.21 – 26.3 | Client or server, optional | 2026-09-15 |
| Easy backups | Fabric | 1.21.10 | Server-side only | 2025-12-28 |
Questions
Does AR1 Backup need Fabric API?
Do players need to install AR1 Backup?
Where are encryption passwords stored?
In the catalog
AR1 Backup is one of 4,058 Storage mods on ModsFinder, and one of 2,474 Storage mods for Fabric. 8,071 mods support Minecraft 26.3.
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What the author says
AR1 Backup is a flagship and reliable Fabric mod for manual or automatic backup of your Minecraft worlds. Forget about sudden crashes, corrupted chunks, or failed experiments — the mod takes care of your data integrity. When the ZIP with password archive method is selected, backups are encrypted with AES‑256. The…
Official listing
- Modrinth page
- modrinth.com/mod/ar1-backup
- Owner
- THEM!DNIGHTCORE
- Published
- 2026-03-29
- Updated on Modrinth
- 2026-09-25
- Facts verified
- 2026-10-15